diff --git a/backEnd/src/main/java/com/quiz/ourclass/domain/member/controller/MemberController.java b/backEnd/src/main/java/com/quiz/ourclass/domain/member/controller/MemberController.java
index 6a0b28b8..0ebbb231 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/domain/member/controller/MemberController.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/domain/member/controller/MemberController.java
@@ -1,15 +1,21 @@
 package com.quiz.ourclass.domain.member.controller;
 
 import com.quiz.ourclass.domain.member.controller.docs.MemberControllerDocs;
+import com.quiz.ourclass.domain.member.dto.TokenDTO;
 import com.quiz.ourclass.domain.member.dto.request.DefaultImageRequest;
 import com.quiz.ourclass.domain.member.dto.request.DeveloperAtRtRequest;
 import com.quiz.ourclass.domain.member.dto.request.MemberSignInRequest;
 import com.quiz.ourclass.domain.member.dto.request.MemberSignUpRequest;
 import com.quiz.ourclass.domain.member.dto.request.MemberUpdateRequest;
 import com.quiz.ourclass.domain.member.dto.request.UpdateFcmTokenRequest;
+import com.quiz.ourclass.domain.member.dto.response.DefaultImagesResponse;
+import com.quiz.ourclass.domain.member.dto.response.MemberMeResponse;
+import com.quiz.ourclass.domain.member.dto.response.MemberUpdateResponse;
+import com.quiz.ourclass.domain.member.dto.response.OIDCPublicKeysResponse;
 import com.quiz.ourclass.domain.member.service.MemberService;
 import com.quiz.ourclass.domain.member.service.client.KakaoOicdClient;
 import com.quiz.ourclass.domain.quiz.dto.request.QuizStartRequest;
+import com.quiz.ourclass.domain.quiz.dto.response.QuizStartResponse;
 import com.quiz.ourclass.global.dto.MemberSimpleDTO;
 import com.quiz.ourclass.global.dto.ResultResponse;
 import io.swagger.v3.oas.annotations.Parameter;
@@ -26,7 +32,6 @@
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
 @RestController
@@ -41,37 +46,31 @@ public class MemberController implements MemberControllerDocs {
     /*  1. 회원가입   */
     @PostMapping(value = "/", consumes = {MediaType.APPLICATION_JSON_VALUE,
         MediaType.MULTIPART_FORM_DATA_VALUE})
-    public ResponseEntity<ResultResponse<?>> signUp(@ModelAttribute MemberSignUpRequest request) {
+    public ResponseEntity<ResultResponse<TokenDTO>> signUp(
+        @ModelAttribute MemberSignUpRequest request) {
         return ResponseEntity.ok(ResultResponse.success(memberService.signUpProcess(request)));
     }
 
     /*  2. 로그인    */
     @PostMapping("/sign-in")
 
-    public ResponseEntity<ResultResponse<?>> signIn(@RequestBody MemberSignInRequest request) {
+    public ResponseEntity<ResultResponse<TokenDTO>> signIn(
+        @RequestBody MemberSignInRequest request) {
 
         return ResponseEntity.ok(ResultResponse.success(memberService.signInProcess(request)));
     }
 
     /* 4. 테스트용  */
     @GetMapping("/kakao-keys")
-    public ResponseEntity<ResultResponse<?>> getKakaoKeys() {
+    public ResponseEntity<ResultResponse<OIDCPublicKeysResponse>> getKakaoKeys() {
 
         return ResponseEntity.ok(ResultResponse.success(kakaoOicdClient.getKakaoOIDCOpenKeys()));
     }
 
-    /* 5. id-Token 받아서 Decoding 하기 */
-    @PostMapping("/decode-id-token")
-    public ResponseEntity<ResultResponse<?>> decodeIdToken(@RequestParam String idToken) {
-        log.info(idToken);
-//        return ResponseEntity.ok(ResultResponse.success(oicdUtil.getUnsignedTokenClaims(idToken,"https://kauth.kakao.com", "edbf10bd8627e6eb676872109e996a9e")));
-        return null;
-    }
-
-
     /* 6 개발자용 Access, RefreshToken 발급 */
     @PostMapping("/developer-At")
-    public ResponseEntity<ResultResponse<?>> getAtRt(@RequestBody DeveloperAtRtRequest request) {
+    public ResponseEntity<ResultResponse<TokenDTO>> getAtRt(
+        @RequestBody DeveloperAtRtRequest request) {
 
         return ResponseEntity.ok(
             ResultResponse.success(memberService.giveDeveloperAccessToken(request)));
@@ -88,7 +87,7 @@ public ResponseEntity<ResultResponse<Void>> saveFcmToken(
     /* 8. 기본 이미지 업데이트 */
 
     @PatchMapping("/default-image")
-    public ResponseEntity<ResultResponse<?>> updateDefaultImage(
+    public ResponseEntity<ResultResponse<String>> updateDefaultImage(
         @ModelAttribute DefaultImageRequest request) {
         return ResponseEntity.ok(
             ResultResponse.success(memberService.updateDefaultImage(request).getPhoto()));
@@ -97,13 +96,13 @@ public ResponseEntity<ResultResponse<?>> updateDefaultImage(
     /* 8. 기본 이미지 조회 */
 
     @GetMapping("/default-image")
-    public ResponseEntity<ResultResponse<?>> getDefaultImages() {
+    public ResponseEntity<ResultResponse<DefaultImagesResponse>> getDefaultImages() {
         return ResponseEntity.ok(ResultResponse.success(memberService.getDefaultImages()));
     }
 
     /* 9. 현 유저의 회원 정보 주기 */
     @GetMapping("/")
-    public ResponseEntity<ResultResponse<?>> rememberMe() {
+    public ResponseEntity<ResultResponse<MemberMeResponse>> rememberMe() {
 
         return ResponseEntity.ok(
             ResultResponse.success(memberService.rememberMe()));
@@ -111,25 +110,25 @@ public ResponseEntity<ResultResponse<?>> rememberMe() {
 
     /* 10. 멤버 프로필 이미지 수정 */
     @PatchMapping("/photo")
-    public ResponseEntity<ResultResponse<?>> updateProfile(
+    public ResponseEntity<ResultResponse<MemberUpdateResponse>> updateProfile(
         @ModelAttribute MemberUpdateRequest request) {
         return ResponseEntity.ok(ResultResponse.success(memberService.updateProfile(request)));
     }
 
     @PostMapping("/start")
-    public ResponseEntity<ResultResponse<?>> certificatingUser(
+    public ResponseEntity<ResultResponse<QuizStartResponse>> certificatingUser(
         @RequestBody QuizStartRequest request) {
         return ResponseEntity.ok(ResultResponse.success(memberService.certificatingUser(request)));
     }
 
     @DeleteMapping("/")
-    public ResponseEntity<ResultResponse<?>> deleteMe() {
+    public ResponseEntity<ResultResponse<Void>> deleteMe() {
         memberService.deleteMe();
         return ResponseEntity.ok(ResultResponse.success(null));
     }
 
     @GetMapping("/{id}")
-    public ResponseEntity<ResultResponse<?>> select(
+    public ResponseEntity<ResultResponse<MemberSimpleDTO>> select(
         @Parameter(name = "id", description = "멤버 PK 값", required = true, in = ParameterIn.PATH)
         @PathVariable(value = "id") Long id
     ) {
diff --git a/backEnd/src/main/java/com/quiz/ourclass/domain/member/controller/docs/MemberControllerDocs.java b/backEnd/src/main/java/com/quiz/ourclass/domain/member/controller/docs/MemberControllerDocs.java
index 057cec09..81a2115c 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/domain/member/controller/docs/MemberControllerDocs.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/domain/member/controller/docs/MemberControllerDocs.java
@@ -1,12 +1,16 @@
 package com.quiz.ourclass.domain.member.controller.docs;
 
+import com.quiz.ourclass.domain.member.dto.TokenDTO;
 import com.quiz.ourclass.domain.member.dto.request.DefaultImageRequest;
 import com.quiz.ourclass.domain.member.dto.request.MemberSignInRequest;
 import com.quiz.ourclass.domain.member.dto.request.MemberSignUpRequest;
 import com.quiz.ourclass.domain.member.dto.request.MemberUpdateRequest;
 import com.quiz.ourclass.domain.member.dto.request.UpdateFcmTokenRequest;
+import com.quiz.ourclass.domain.member.dto.response.DefaultImagesResponse;
+import com.quiz.ourclass.domain.member.dto.response.MemberMeResponse;
 import com.quiz.ourclass.domain.member.dto.response.MemberUpdateResponse;
 import com.quiz.ourclass.domain.quiz.dto.request.QuizStartRequest;
+import com.quiz.ourclass.domain.quiz.dto.response.QuizStartResponse;
 import com.quiz.ourclass.global.dto.MemberSimpleDTO;
 import com.quiz.ourclass.global.dto.ResultResponse;
 import io.swagger.v3.oas.annotations.Operation;
@@ -40,7 +44,7 @@ public interface MemberControllerDocs {
                 description = "OIDC 토큰 인증에 실패했습니다.")
         })
     @PostMapping
-    ResponseEntity<ResultResponse<?>> signUp(MemberSignUpRequest request);
+    ResponseEntity<ResultResponse<TokenDTO>> signUp(MemberSignUpRequest request);
 
 
     @Operation(summary = "로그인",
@@ -55,7 +59,7 @@ public interface MemberControllerDocs {
                 description = "OIDC 토큰 인증에 실패했습니다.")
         })
     @PostMapping
-    ResponseEntity<ResultResponse<?>> signIn(MemberSignInRequest request);
+    ResponseEntity<ResultResponse<TokenDTO>> signIn(MemberSignInRequest request);
 
     @Operation(summary = "FCM 토큰 저장 및 갱신",
         description = "입력으로 들어오는 FCM 토큰을 저장 및 갱신 합니다.",
@@ -74,8 +78,17 @@ ResponseEntity<ResultResponse<Void>> saveFcmToken(
                 description = "기본 이미지 조회에 성공하였습니다."
             )
         })
+    @GetMapping("/default-image")
+    public ResponseEntity<ResultResponse<DefaultImagesResponse>> getDefaultImages();
+
+    @Operation(summary = "기본 이미지 정보 수정",
+        responses = {
+            @ApiResponse(responseCode = "200",
+                description = "기본 이미지 수정에 성공하였습니다."
+            )
+        })
     @PatchMapping("/default-image")
-    public ResponseEntity<ResultResponse<?>> updateDefaultImage(
+    public ResponseEntity<ResultResponse<String>> updateDefaultImage(
         @ModelAttribute DefaultImageRequest request);
 
     @Operation(summary = "현 유저의 회원정보 가져오기",
@@ -84,7 +97,7 @@ public ResponseEntity<ResultResponse<?>> updateDefaultImage(
                 description = "유저 정보 확인에 성공하였습니다.")
         })
     @GetMapping("/")
-    public ResponseEntity<ResultResponse<?>> rememberMe();
+    public ResponseEntity<ResultResponse<MemberMeResponse>> rememberMe();
 
     @Operation(summary = "프로필 이미지 수정",
         responses = {
@@ -94,7 +107,8 @@ public ResponseEntity<ResultResponse<?>> updateDefaultImage(
     )
 
     @PatchMapping("/photo")
-    public ResponseEntity<ResultResponse<?>> updateProfile(MemberUpdateRequest request);
+    public ResponseEntity<ResultResponse<MemberUpdateResponse>> updateProfile(
+        MemberUpdateRequest request);
 
     @Operation(summary = "멤버 조회", description = "ID 값에 해당하는 멤버 Simple 정보(id, name, iamgeUrl)를 조회합니다.",
         responses = {
@@ -104,14 +118,15 @@ public ResponseEntity<ResultResponse<?>> updateDefaultImage(
         }
     )
     @GetMapping("{id}")
-    ResponseEntity<ResultResponse<?>> select(
+    ResponseEntity<ResultResponse<MemberSimpleDTO>> select(
 
         @PathVariable(value = "id") Long id
     );
 
     @PostMapping("/start")
-    public ResponseEntity<ResultResponse<?>> certificatingUser(QuizStartRequest request);
+    public ResponseEntity<ResultResponse<QuizStartResponse>> certificatingUser(
+        QuizStartRequest request);
 
     @DeleteMapping("/")
-    public ResponseEntity<ResultResponse<?>> deleteMe();
+    public ResponseEntity<ResultResponse<Void>> deleteMe();
 }
diff --git a/backEnd/src/main/java/com/quiz/ourclass/domain/member/dto/request/MemberSignInRequest.java b/backEnd/src/main/java/com/quiz/ourclass/domain/member/dto/request/MemberSignInRequest.java
index 2ba4f39a..8a88d2f9 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/domain/member/dto/request/MemberSignInRequest.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/domain/member/dto/request/MemberSignInRequest.java
@@ -1,6 +1,5 @@
 package com.quiz.ourclass.domain.member.dto.request;
 
-import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 
diff --git a/backEnd/src/main/java/com/quiz/ourclass/domain/member/service/OidcService.java b/backEnd/src/main/java/com/quiz/ourclass/domain/member/service/OidcService.java
index 9705ffc9..88c3071e 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/domain/member/service/OidcService.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/domain/member/service/OidcService.java
@@ -3,13 +3,10 @@
 import com.quiz.ourclass.domain.member.dto.OIDCDecodePayload;
 import com.quiz.ourclass.domain.member.dto.OIDCPublicKeyDTO;
 import com.quiz.ourclass.domain.member.dto.response.OIDCPublicKeysResponse;
-import com.quiz.ourclass.domain.member.repository.MemberRepository;
 import com.quiz.ourclass.domain.member.service.client.KakaoOicdClient;
 import com.quiz.ourclass.domain.member.service.oidc.OidcUtilImpl;
 import com.quiz.ourclass.global.exception.ErrorCode;
 import com.quiz.ourclass.global.exception.GlobalException;
-import io.jsonwebtoken.Claims;
-import io.jsonwebtoken.Jws;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Value;
@@ -31,20 +28,23 @@ public class OidcService {
     private final KakaoOicdClient kakaoOicdClient;
 
     /*
-    * 1. 유효성 검증
-    * (1) 토큰 디코딩 -> (2) kid 값 알아내기 -> (3) kid 이용, RSA key 재료 얻어내기 -> RSA를 통한 유효성 검증
-    * */
+     * 1. 유효성 검증
+     * (1) 토큰 디코딩 -> (2) kid 값 알아내기 -> (3) kid 이용, RSA key 재료 얻어내기 -> RSA를 통한 유효성 검증
+     * */
 
-    public OIDCDecodePayload certificatingIdToken (String idToken)  {
+    public OIDCDecodePayload certificatingIdToken(String idToken) {
 
         // 해당 토큰의 서명 인증 할 수 있는 공개 키의 id (kid) 특정
         String kid = oicdUtil.getKidFromUnsignedTokenHeader(idToken, iss, aud);
         // 카카오 인증 서버에서 이번 주기에 사용한 공개키 목록 전체 받아오기 -> 캐시화 필요!!! 너무 많이 요청하면 차단 당함!
         OIDCPublicKeysResponse keys = kakaoOicdClient.getKakaoOIDCOpenKeys();
         // 이번 주에 카카오가 제공하는 공개키 중에 내 Resource Owner 의 id-token 인증 가능한 key 받아오기
-        OIDCPublicKeyDTO nowKey = keys.getKeys().stream().filter(key -> key.getKid().equals(kid)).findFirst().orElseThrow(null);
+        OIDCPublicKeyDTO nowKey = keys.getKeys().stream().filter(key -> key.getKid().equals(kid))
+            .findFirst().orElseThrow(null);
 
-        if(nowKey == null) throw new GlobalException(ErrorCode.CERTIFICATION_FAILED);
+        if (nowKey == null) {
+            throw new GlobalException(ErrorCode.CERTIFICATION_FAILED);
+        }
 
         // 해당 키로 서명 인증, 예외 안 터지고 인증 되면 Body 가져옴
         return oicdUtil.getOIDCTokenBody(idToken, nowKey.getN(), nowKey.getE());
diff --git a/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/controller/QuizController.java b/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/controller/QuizController.java
index 7a30b446..8f9b64ad 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/controller/QuizController.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/controller/QuizController.java
@@ -1,9 +1,12 @@
 package com.quiz.ourclass.domain.quiz.controller;
 
 import com.quiz.ourclass.domain.quiz.controller.docs.QuizControllerDocs;
+import com.quiz.ourclass.domain.quiz.dto.GamerDTO;
+import com.quiz.ourclass.domain.quiz.dto.QuizGameDTO;
 import com.quiz.ourclass.domain.quiz.dto.request.MakingQuizRequest;
 import com.quiz.ourclass.domain.quiz.service.QuizServiceImpl;
 import com.quiz.ourclass.global.dto.ResultResponse;
+import java.util.List;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.ResponseEntity;
@@ -23,24 +26,25 @@ public class QuizController implements QuizControllerDocs {
     public final QuizServiceImpl quizService;
 
     @PutMapping("")
-    public ResponseEntity<ResultResponse<?>> makingQuiz(@RequestBody MakingQuizRequest request) {
+    public ResponseEntity<ResultResponse<Void>> makingQuiz(@RequestBody MakingQuizRequest request) {
         quizService.makingQuiz(request);
         return ResponseEntity.ok(ResultResponse.success(null));
     }
 
     @GetMapping("/{orgId}")
-    public ResponseEntity<ResultResponse<?>> getQuizList(@PathVariable("orgId") long orgId) {
+    public ResponseEntity<ResultResponse<List<QuizGameDTO>>> getQuizList(
+        @PathVariable("orgId") long orgId) {
         return ResponseEntity.ok(ResultResponse.success(quizService.getQuizList(orgId)));
     }
 
     @GetMapping("/code/{quizGameId}")
-    public ResponseEntity<ResultResponse<?>> getQuizUrl(
+    public ResponseEntity<ResultResponse<String>> getQuizUrl(
         @PathVariable("quizGameId") long quizGameId) {
         return ResponseEntity.ok(ResultResponse.success(quizService.getQuizUrl(quizGameId)));
     }
 
     @GetMapping("/ranking/{quizGameId}")
-    public ResponseEntity<ResultResponse<?>> getRanking(
+    public ResponseEntity<ResultResponse<List<GamerDTO>>> getRanking(
         @PathVariable("quizGameId") long quizGameId) {
         return ResponseEntity.ok(ResultResponse.success(quizService.getRanking(quizGameId)));
     }
diff --git a/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/controller/docs/QuizControllerDocs.java b/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/controller/docs/QuizControllerDocs.java
index 8a342df8..c3cf9678 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/controller/docs/QuizControllerDocs.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/controller/docs/QuizControllerDocs.java
@@ -1,5 +1,6 @@
 package com.quiz.ourclass.domain.quiz.controller.docs;
 
+import com.quiz.ourclass.domain.quiz.dto.GamerDTO;
 import com.quiz.ourclass.domain.quiz.dto.QuizGameDTO;
 import com.quiz.ourclass.domain.quiz.dto.request.MakingQuizRequest;
 import com.quiz.ourclass.global.dto.ResultResponse;
@@ -8,6 +9,7 @@
 import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import java.util.List;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
@@ -27,7 +29,7 @@ public interface QuizControllerDocs {
                 """, content = @Content)
         })
     @PutMapping("")
-    public ResponseEntity<ResultResponse<?>> makingQuiz(@RequestBody MakingQuizRequest request);
+    public ResponseEntity<ResultResponse<Void>> makingQuiz(@RequestBody MakingQuizRequest request);
 
 
     @Operation(summary = "퀴즈 리스트 불러오기",
@@ -38,7 +40,8 @@ public interface QuizControllerDocs {
                 content = @Content)
         })
     @GetMapping("/{orgId}")
-    public ResponseEntity<ResultResponse<?>> getQuizList(@PathVariable("orgId") long orgId);
+    public ResponseEntity<ResultResponse<List<QuizGameDTO>>> getQuizList(
+        @PathVariable("orgId") long orgId);
 
     @Operation(summary = "퀴즈 URL 생성 및 전송",
         responses = {
@@ -53,7 +56,7 @@ public interface QuizControllerDocs {
             @ApiResponse(responseCode = "403", description = "(message : \"해당 퀴즈의 [URL]을 생성할 권한이 없습니다.\")")
         })
     @GetMapping("/code/{quizGameId}")
-    public ResponseEntity<ResultResponse<?>> getQuizUrl(
+    public ResponseEntity<ResultResponse<String>> getQuizUrl(
         @PathVariable("quizGameId") long quizGameId);
 
     @Operation(summary = "퀴즈 게임 실시간 랭킹 보기",
@@ -62,6 +65,6 @@ public ResponseEntity<ResultResponse<?>> getQuizUrl(
                 content = @Content),
             @ApiResponse(responseCode = "400", description = "(message : \"해당 퀴즈는 종료되었습니다.\")")
         })
-    public ResponseEntity<ResultResponse<?>> getRanking(
+    public ResponseEntity<ResultResponse<List<GamerDTO>>> getRanking(
         @PathVariable("quizGameId") long quizGameId);
 }
diff --git a/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/mapper/QuizGameMapper.java b/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/mapper/QuizGameMapper.java
index 428f2dce..e518a19e 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/mapper/QuizGameMapper.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/mapper/QuizGameMapper.java
@@ -23,7 +23,7 @@ public interface QuizGameMapper {
     @Transactional
     Quiz toQuiz(QuizGame quizGame, QuizDTO quizDTO);
 
-    QuizGameDTO toQuizGameDTO(QuizGame QuizGame);
+    QuizGameDTO toQuizGameDTO(QuizGame quizGame);
 
     FcmDTO toFcmDTO(String title, String body);
 
diff --git a/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/service/QuizReceive.java b/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/service/QuizReceive.java
index 3aa4cc1b..71a1bc27 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/service/QuizReceive.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/service/QuizReceive.java
@@ -63,11 +63,12 @@ public void receivedQuestion(QuestionRequest request) {
     @KafkaListener(topics = ConstantUtil.QUIZ_ANSWER, containerFactory = "answerResponseContainerFactory")
     public void receivedAnswer(AnswerResponse response) {
         log.info("보내줘야할 답 상세={}", response.toString());
-
-        if (response.submit().replaceAll(" ", "").equals(response.ans().replaceAll(" ", ""))) {
+        // replaceAll 은 항상 정규 표현식을 컴파일하므로 성능 오버헤드가 발생할 수 있음
+        // replaceAll 은 정규 표현식을 사용하여 문자열을 대체하지만, replace는 정규 표현식을 사용하지 않고 단순히 문자열을 대체
+        if (response.submit().replace(" ", "").equals(response.ans().replaceAll(" ", ""))) {
 
             log.info(String.valueOf(
-                response.submit().replaceAll(" ", "").equals(response.ans().replaceAll(" ", ""))));
+                response.submit().replace(" ", "").equals(response.ans().replaceAll(" ", ""))));
 
             int score =
                 redisUtil
diff --git a/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/service/QuizServiceImpl.java b/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/service/QuizServiceImpl.java
index c023cec7..54325e22 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/service/QuizServiceImpl.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/domain/quiz/service/QuizServiceImpl.java
@@ -40,7 +40,7 @@ public class QuizServiceImpl implements QuizService {
     private final CountdownService countdownService;
 
     @Value("${ulvan.url}")
-    private String UlvanUrl;
+    private String ulvanUrl;
 
 
     @Transactional
@@ -88,7 +88,7 @@ public String getQuizUrl(long quizGameId) {
             .orElseThrow(() -> new GlobalException(ErrorCode.MEMBER_NOT_FOUND));
         // 1. [UUID]를 이용해 퀴즈 게임 [URL]을 생성합니다.
         UUID uuid = UUID.randomUUID();
-        String url = UlvanUrl + quizGameId + "/" + uuid;
+        String url = ulvanUrl + quizGameId + "/" + uuid;
         // 2. [URL]을 [REDIS]에 수명을 10분으로 두고 저장합니다. (퀴즈 방 입장할 때 체크용)
         redisUtil.setQuizGame(quizGameId, uuid);
         // 3. [URL]을 요청 당사자는 물론, 단체에 속한 모두에게 전송 합니다.
diff --git a/backEnd/src/main/java/com/quiz/ourclass/global/config/AopConfig.java b/backEnd/src/main/java/com/quiz/ourclass/global/config/AopConfig.java
index b3421c78..72b14863 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/global/config/AopConfig.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/global/config/AopConfig.java
@@ -1,6 +1,8 @@
 package com.quiz.ourclass.global.config;
 
 import com.quiz.ourclass.global.dto.ResultResponse;
+import com.quiz.ourclass.global.exception.ErrorCode;
+import com.quiz.ourclass.global.exception.GlobalException;
 import jakarta.servlet.http.HttpServletRequest;
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
@@ -29,7 +31,7 @@ public class AopConfig {
     private double afterTime = 0L;
 
     @Pointcut("execution(* com..controller..*(..))")
-    public void ControllerMethod() {
+    public void controllerMethod() {
     }
 
     // 컨트롤러 내의 모든 매소드에 대하여 Logging을 실행한다. 다만 어노테이션이 붙은 매소드는 실행하지 않는다.
@@ -54,15 +56,36 @@ public Object logging(ProceedingJoinPoint pjp) throws Throwable {
             , pjp.getSignature().getDeclaringTypeName()
             , pjp.getSignature().getName()
             , logMsg);
+
         // 결과 확인
-        ResponseEntity<ResultResponse<?>> result = (ResponseEntity<ResultResponse<?>>) pjp.proceed();
+        ResponseEntity<ResultResponse<?>> result = null;
+
+        try {
+            result = (ResponseEntity<ResultResponse<?>>) pjp.proceed();
+        } catch (Exception e) {
+            log.error("다음의 메소드 실행 중 에러가 발생함: {}({})",
+                pjp.getSignature().getDeclaringTypeName(),
+                pjp.getSignature().getName(), e);
+        }
+
         // 끝시간 check
         afterTime = System.currentTimeMillis();
-        if (result != null) {
+        if (result != null && result.getBody() != null) {
             log.info("-----------> RESPONSE : {}({}) = {} ({}ms)"
                 , pjp.getSignature().getDeclaringTypeName(), pjp.getSignature().getName(),
                 result.getBody().getData(),
                 (afterTime - beforeTime) / 1000.0);
+        } else if (result != null) {
+            log.warn("-----------> RESPONSE : {}({}) = BODY 없음 ({}ms)",
+                pjp.getSignature().getDeclaringTypeName(),
+                pjp.getSignature().getName(),
+                (afterTime - beforeTime) / 1000.0);
+        } else {
+            // 어떠한 에러로 인해 Pjp 실행이 끝난 후 ResponseEntity 자체가 생성되지 않은 상황을 의미
+            log.warn("-----------> RESPONSE : {}({}) = 에러로 인해 결과 반환 안됨. ({}ms)",
+                pjp.getSignature().getDeclaringTypeName(),
+                pjp.getSignature().getName(),
+                (afterTime - beforeTime) / 1000.0);
         }
         return result;
     }
@@ -84,7 +107,7 @@ private String getObjectDetails(Object arg) {
                 details.append((field.getName())).append("=");
                 details.append((field.get(arg))).append(", ");
             } catch (IllegalAccessException e) {
-                throw new RuntimeException("특정 필드 접근에 실패했습니다.", e);
+                throw new GlobalException(ErrorCode.FAILED_TO_ACCESS_VARIABLE);
             }
         }
 
@@ -109,7 +132,7 @@ private StringBuilder getHeaderDetail() {
 
 
         } else {
-            System.out.println("No HTTP request details available");
+            log.warn("No HTTP request details available");
         }
 
         return ans;
diff --git a/backEnd/src/main/java/com/quiz/ourclass/global/config/CacheConfig.java b/backEnd/src/main/java/com/quiz/ourclass/global/config/CacheConfig.java
index c1668f56..aab4113e 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/global/config/CacheConfig.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/global/config/CacheConfig.java
@@ -43,7 +43,7 @@ public RedisCacheConfiguration redisCacheConfiguration() {
      * */
     @Bean
     public RedisCacheManagerBuilderCustomizer redisCacheManagerBuilderCustomizer() {
-        return (builder) -> builder
+        return builder -> builder
             .withCacheConfiguration("OIDC",
                 RedisCacheConfiguration.defaultCacheConfig()
                     .computePrefixWith(cacheName -> "OIDC:")
diff --git a/backEnd/src/main/java/com/quiz/ourclass/global/config/SecurityConfig.java b/backEnd/src/main/java/com/quiz/ourclass/global/config/SecurityConfig.java
index d2c98ef6..2eb46ee8 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/global/config/SecurityConfig.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/global/config/SecurityConfig.java
@@ -86,7 +86,7 @@ public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
                 (corsCustomizer -> corsCustomizer.configurationSource(corsConfigurationSource())));
 
         http
-            .headers((headers) -> headers.frameOptions(
+            .headers(headers -> headers.frameOptions(
                 HeadersConfigurer.FrameOptionsConfig::sameOrigin
             ));                                                 // (5)
 
@@ -98,13 +98,13 @@ public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
         );
 
         http
-            .sessionManagement((sessionManagement) ->
+            .sessionManagement(sessionManagement ->
                 sessionManagement.sessionCreationPolicy(SessionCreationPolicy.STATELESS)
             );                                                  // (7)
 
         http
             .authorizeHttpRequests(
-                (auth) ->
+                auth ->
                     auth                                        // (8)
                         .dispatcherTypeMatchers(DispatcherType.ASYNC).permitAll()
                         .dispatcherTypeMatchers(DispatcherType.FORWARD).permitAll()
diff --git a/backEnd/src/main/java/com/quiz/ourclass/global/config/kafka/ListenerConfig.java b/backEnd/src/main/java/com/quiz/ourclass/global/config/kafka/ListenerConfig.java
index 15afd9b9..88e4e195 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/global/config/kafka/ListenerConfig.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/global/config/kafka/ListenerConfig.java
@@ -5,6 +5,7 @@
 import com.quiz.ourclass.domain.quiz.dto.GamerDTO;
 import com.quiz.ourclass.domain.quiz.dto.request.QuestionRequest;
 import com.quiz.ourclass.domain.quiz.dto.response.AnswerResponse;
+import com.quiz.ourclass.global.util.ConstantUtil;
 import java.util.Map;
 import org.apache.kafka.clients.consumer.ConsumerConfig;
 import org.apache.kafka.common.serialization.StringDeserializer;
@@ -49,7 +50,7 @@ public ConsumerFactory<String, Message> consumerFactory() {
                 .put(ConsumerConfig.GROUP_ID_CONFIG, kafkaGroup)
                 .put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class)
                 .put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, deserializer)
-                .put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "latest")
+                .put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, ConstantUtil.LATEST)
                 .build();
 
         return new DefaultKafkaConsumerFactory<>(
@@ -75,7 +76,7 @@ public ConsumerFactory<String, GamerDTO> gamerDTOConsumerFactory() {
                 .put(ConsumerConfig.GROUP_ID_CONFIG, "group-2")
                 .put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class)
                 .put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, deserializer)
-                .put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "latest")
+                .put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, ConstantUtil.LATEST)
                 .build();
 
         return new DefaultKafkaConsumerFactory<>(
@@ -102,7 +103,7 @@ public ConsumerFactory<String, QuestionRequest> questionRequestConsumerFactory()
                 .put(ConsumerConfig.GROUP_ID_CONFIG, "group-3")
                 .put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class)
                 .put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, deserializer)
-                .put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "latest")
+                .put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, ConstantUtil.LATEST)
                 .build();
 
         return new DefaultKafkaConsumerFactory<>(
@@ -128,7 +129,7 @@ public ConsumerFactory<String, AnswerResponse> answerResponseConsumerFactory() {
                 .put(ConsumerConfig.GROUP_ID_CONFIG, "group-4")
                 .put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class)
                 .put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, deserializer)
-                .put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "latest")
+                .put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, ConstantUtil.LATEST)
                 .build();
         return new DefaultKafkaConsumerFactory<>(
             consumerConfigurations, new StringDeserializer(), deserializer
diff --git a/backEnd/src/main/java/com/quiz/ourclass/global/config/kafka/ProducerConfig.java b/backEnd/src/main/java/com/quiz/ourclass/global/config/kafka/ProducerConfig.java
index 4a773b97..b9531c82 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/global/config/kafka/ProducerConfig.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/global/config/kafka/ProducerConfig.java
@@ -52,32 +52,32 @@ public KafkaTemplate<String, Message> kafkaTemplate() {
 
     // Gamer Template -> 총 게이머에 대한 명세(이름, id, 프로필 사진), 게이머의 랭킹
     @Bean
-    public ProducerFactory<String, GamerDTO> GamerProducerFactory() {
+    public ProducerFactory<String, GamerDTO> gamerProducerFactory() {
         return new DefaultKafkaProducerFactory<>(producerConfigurations());
     }
 
     @Bean
     public KafkaTemplate<String, GamerDTO> gamerTemplate() {
-        return new KafkaTemplate<>(GamerProducerFactory());
+        return new KafkaTemplate<>(gamerProducerFactory());
     }
 
     @Bean
-    public ProducerFactory<String, QuestionRequest> QuestionProducerFactory() {
+    public ProducerFactory<String, QuestionRequest> questionProducerFactory() {
         return new DefaultKafkaProducerFactory<>(producerConfigurations());
     }
 
     @Bean
     public KafkaTemplate<String, QuestionRequest> questionTemplate() {
-        return new KafkaTemplate<>(QuestionProducerFactory());
+        return new KafkaTemplate<>(questionProducerFactory());
     }
 
     @Bean
-    public ProducerFactory<String, AnswerResponse> AnswerProducerFactory() {
+    public ProducerFactory<String, AnswerResponse> answerProducerFactory() {
         return new DefaultKafkaProducerFactory<>(producerConfigurations());
     }
 
     @Bean
     public KafkaTemplate<String, AnswerResponse> answerTemplate() {
-        return new KafkaTemplate<>(AnswerProducerFactory());
+        return new KafkaTemplate<>(answerProducerFactory());
     }
 }
diff --git a/backEnd/src/main/java/com/quiz/ourclass/global/exception/ErrorCode.java b/backEnd/src/main/java/com/quiz/ourclass/global/exception/ErrorCode.java
index eae43c8e..7bd2bcdd 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/global/exception/ErrorCode.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/global/exception/ErrorCode.java
@@ -20,6 +20,7 @@ public enum ErrorCode {
     CANT_LOAD_KAFKA(HttpStatus.INTERNAL_SERVER_ERROR, "카프카 메타 데이터를 조회할 수 없습니다."),
     FAILED_TO_SENDING_MESSAGE(HttpStatus.BANDWIDTH_LIMIT_EXCEEDED,
         "메세지를 카프카로 전송하는데 실패했습니다. 재시도 중..."),
+    FAILED_TO_ACCESS_VARIABLE(HttpStatus.BAD_REQUEST, "특정 필드 접근에 실패했습니다."),
 
 
     //member
diff --git a/backEnd/src/main/java/com/quiz/ourclass/global/util/ConstantUtil.java b/backEnd/src/main/java/com/quiz/ourclass/global/util/ConstantUtil.java
index 3403d53d..613414ec 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/global/util/ConstantUtil.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/global/util/ConstantUtil.java
@@ -21,6 +21,8 @@ public abstract class ConstantUtil {
     public static final String REDIS_GROUP_KEY = "CHALLENGE_LEADER:";
     public static final Long DEFAULT_TIMEOUT = 60L * 1000 * 20;
     public static final Long REDIRECT_TIME = 5L * 1000;
+    public static final String EXCEPTION_ATTRIBUTE = "exception";
+    public static final String LATEST = "latest";
 
     // 인스턴스화 방지
     private ConstantUtil() {
diff --git a/backEnd/src/main/java/com/quiz/ourclass/global/util/KafkaUtil.java b/backEnd/src/main/java/com/quiz/ourclass/global/util/KafkaUtil.java
index 8a38ca50..583dc216 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/global/util/KafkaUtil.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/global/util/KafkaUtil.java
@@ -32,7 +32,17 @@ public void getTopicMeta(String topic) {
             descriptions.forEach((name, description) -> {
                 log.info("Topic: {} \nPartitions: {}", name, description.partitions().size());
             });
-        } catch (InterruptedException | ExecutionException e) {
+            // 현재 쓰레드가 인터럽트 되면, 발생하는 예외
+            // 인터럽트 되었다 => 다른 쓰레드가 현재 쓰레드에게 작업을 중단하고 가능한 빨리 종료하라는 신호를 보냈다.
+            // 지금은 InterruptedException 예외를 잡아서 서버 자체 예외만 던지고, 쓰레드 처리에 대한 조치를 하지 않고 있다.
+            // 이렇게 되면, 쓰레드가 정상 종료되지 않아 문제가 된다.
+            // 따라서 정상 종료 절차를 수행하고, 원래대로 우리 식의 예외를 수행해야 한다.
+        } catch (InterruptedException e) {
+            // InterruptedException 이 발생하면, 현재 쓰레드를 다시 인터럽트 시킨다.
+            // InterruptedException 으로 인터럽트를 캐치하면, 현재 쓰레드가 인터럽트 되었다는 정보를 잃기 때문이다.
+            Thread.currentThread().interrupt();
+            throw new GlobalException(ErrorCode.CANT_LOAD_KAFKA);
+        } catch (ExecutionException e) {
             throw new GlobalException(ErrorCode.CANT_LOAD_KAFKA);
         }
     }
@@ -45,7 +55,11 @@ public void deleteTopic(String topicName) {
         try {
             future.get();
             log.info("Topic {} 가 성공적으로 삭제 되었습니다.", topicName);
-        } catch (InterruptedException | ExecutionException e) {
+        } catch (InterruptedException e) {
+            // 마찬가지의 이유로 interrupt 를 한번 더 던진다.
+            Thread.currentThread().interrupt();
+            throw new GlobalException(ErrorCode.CANT_LOAD_KAFKA);
+        } catch (ExecutionException e) {
             throw new GlobalException(ErrorCode.CANT_LOAD_KAFKA);
         }
     }
diff --git a/backEnd/src/main/java/com/quiz/ourclass/global/util/jwt/JwtAuthFilter.java b/backEnd/src/main/java/com/quiz/ourclass/global/util/jwt/JwtAuthFilter.java
index d8be2813..b60f46d2 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/global/util/jwt/JwtAuthFilter.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/global/util/jwt/JwtAuthFilter.java
@@ -2,6 +2,7 @@
 
 import com.quiz.ourclass.global.dto.FilterResponse;
 import com.quiz.ourclass.global.exception.ErrorCode;
+import com.quiz.ourclass.global.util.ConstantUtil;
 import io.jsonwebtoken.Claims;
 import jakarta.servlet.FilterChain;
 import jakarta.servlet.ServletException;
@@ -42,13 +43,13 @@ protected void doFilterInternal(HttpServletRequest request, HttpServletResponse
         // 토큰 유효성 체크 -> 통과 못하면 바로 다음 filter 로 넘어간다.
         switch (jwtUtil.validateToken(token)) {
             case -1:
-                request.setAttribute("exception", ErrorCode.EXPIRED_TOKEN);
+                request.setAttribute(ConstantUtil.EXCEPTION_ATTRIBUTE, ErrorCode.EXPIRED_TOKEN);
                 filterChain.doFilter(request, response);
                 return;
             case -2:
             case -3:
             case -4:
-                request.setAttribute("exception", ErrorCode.INVALID_TOKEN);
+                request.setAttribute(ConstantUtil.EXCEPTION_ATTRIBUTE, ErrorCode.INVALID_TOKEN);
                 filterChain.doFilter(request, response);
                 return;
             case -5:
@@ -65,7 +66,8 @@ protected void doFilterInternal(HttpServletRequest request, HttpServletResponse
         try {
             setAuthentication(info.getSubject());
         } catch (UsernameNotFoundException e) {
-            request.setAttribute("exception", ErrorCode.NOT_FOUND_MEMBER.getMessage());
+            request.setAttribute(ConstantUtil.EXCEPTION_ATTRIBUTE,
+                ErrorCode.NOT_FOUND_MEMBER.getMessage());
             log.error("관련 에러: {}", e.getMessage());
         }
 
diff --git a/backEnd/src/main/java/com/quiz/ourclass/global/util/jwt/JwtUtil.java b/backEnd/src/main/java/com/quiz/ourclass/global/util/jwt/JwtUtil.java
index dc9999ab..b64f841a 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/global/util/jwt/JwtUtil.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/global/util/jwt/JwtUtil.java
@@ -45,8 +45,8 @@ public class JwtUtil {
      *
      * (3) signatureAlgorithm: JWT의 전자서명 파트를 만들 때 쓰이는 알고리즘이다.
      *
-     * (4) ACCESS_TOKEN_TIME: 접근 토큰 수명
-     * (5) REFRESH_TOKEN_TIME: 갱신 토큰 수명
+     * (4) accessTokenTime: 접근 토큰 수명
+     * (5) refreshTokenTime: 갱신 토큰 수명
      * (6) Bearer Token Prefix
      * */
 
@@ -54,13 +54,18 @@ public class JwtUtil {
     @Value("${jwt.secret}")
     private String ingredient;
     private Key key;
-    private final SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS512;
+
+    // final 필드를 static으로 선언하지 않으면, 클래스의 각 인스턴스 마다 해당 필드의 값이 복사됨.
+    // 이는 불필요하게 메모리가 사용된다.
+    // static 없이 final로 선언된 필드는 각 인스턴스가 고유한 값을 가질 수 있다는 의미를 내포
+    // static으로 선언하면 클래스 수준에서 값을 공유한다는 의도가 명확해짐
+    private static final SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS512;
 
     @Value("#{new Integer('${jwt.token.access-expiration-time}')}")
-    private Integer ACCESS_TOKEN_TIME;
+    private Integer accessTokenTime;
 
     @Value("#{new Integer('${jwt.token.refresh-expiration-time}')}")
-    private Integer REFRESH_TOKEN_TIME;
+    private Integer refreshTokenTime;
     private static final String BEARER_PREFIX = "Bearer ";
 
     private final UserDetailsServiceImpl userDetailsService;
@@ -101,7 +106,7 @@ public String createToken(long memberId, String role, boolean isAccess) {
             .claim("ROLE", role)
             .setIssuedAt(new Date(now.getTime()))
             .setExpiration(
-                new Date(now.getTime() + (isAccess ? ACCESS_TOKEN_TIME : REFRESH_TOKEN_TIME)))
+                new Date(now.getTime() + (isAccess ? accessTokenTime : refreshTokenTime)))
             .signWith(key, signatureAlgorithm)
             .compact();
 
@@ -137,20 +142,20 @@ public int validateToken(String token) {
             return 0;
         } catch (ExpiredJwtException e) {
             log.error("Expired JWT token, 만료된 JWT token 입니다.");
-            log.error("관련에러: {}", e.getMessage());
+            log.error(e.getMessage());
             return -1;
         } catch (io.jsonwebtoken.security.SignatureException | SecurityException |
                  MalformedJwtException e) {
             log.error("Invalid JWT signature, 유효하지 않는 JWT 서명 입니다.");
-            log.error("관련에러: {}", e.getMessage());
+            log.error(e.getMessage());
             return -2;
         } catch (UnsupportedJwtException e) {
             log.error("Unsupported JWT token, 지원되지 않는 JWT 토큰 입니다.");
-            log.error("관련에러: {}", e.getMessage());
+            log.error(e.getMessage());
             return -3;
         } catch (IllegalArgumentException e) {
             log.error("JWT claims is empty, 잘못된 JWT 토큰 입니다.");
-            log.error("관련에러: {}", e.getMessage());
+            log.error(e.getMessage());
             return -4;
         }
     }
@@ -178,7 +183,7 @@ public Authentication createAuthentication(String id) {
 
     public void saveRefresh(long memberId, String accessToken, String refreshToken) {
         refreshRepository.save(
-            Refresh.of(memberId, accessToken, refreshToken, REFRESH_TOKEN_TIME / 1000));
+            Refresh.of(memberId, accessToken, refreshToken, refreshTokenTime / 1000));
     }
 
     /*
@@ -216,5 +221,4 @@ public void deleteToken(Member member) {
         refreshRepository.deleteById(member.getId());
     }
 
-
 }
diff --git a/backEnd/src/main/java/com/quiz/ourclass/global/util/scheduler/SchedulingService.java b/backEnd/src/main/java/com/quiz/ourclass/global/util/scheduler/SchedulingService.java
index 3748b22c..dc769ae5 100644
--- a/backEnd/src/main/java/com/quiz/ourclass/global/util/scheduler/SchedulingService.java
+++ b/backEnd/src/main/java/com/quiz/ourclass/global/util/scheduler/SchedulingService.java
@@ -46,7 +46,7 @@ public <T> void scheduleTask(T target, Consumer<T> action, LocalDateTime executi
 
     @Transactional
     @Scheduled(cron = "0 0 3 * * *")
-    protected void relationShipScore() {
+    public void relationShipScore() {
         List<Organization> organizations =
             organizationRepository.findAll();
 
@@ -64,7 +64,7 @@ protected void relationShipScore() {
 
     @Transactional
     @Scheduled(cron = "0 15 3 * * *")
-    protected void isolationScore() {
+    public void isolationScore() {
         List<Organization> organizations = organizationRepository.findAll();
 
         for (Organization organization : organizations) {