diff --git a/src/app/community/[boardCode]/[postId]/CommentWrite.tsx b/src/app/community/[boardCode]/[postId]/CommentWrite.tsx
index c3691c49..527f37b9 100644
--- a/src/app/community/[boardCode]/[postId]/CommentWrite.tsx
+++ b/src/app/community/[boardCode]/[postId]/CommentWrite.tsx
@@ -18,7 +18,8 @@ const CommentWrite = ({ postId, refresh, curSelectedComment, setCurSelectedComme
 
   const submitComment = async () => {
     try {
-      await createCommentApi(postId, {
+      await createCommentApi({
+        postId: postId,
         content: contentRef.current?.value || "",
         parentId: curSelectedComment,
       });
diff --git a/src/app/community/[boardCode]/[postId]/KebabMenu.tsx b/src/app/community/[boardCode]/[postId]/KebabMenu.tsx
index 80926dbb..19f151c9 100644
--- a/src/app/community/[boardCode]/[postId]/KebabMenu.tsx
+++ b/src/app/community/[boardCode]/[postId]/KebabMenu.tsx
@@ -19,7 +19,7 @@ const KebabMenu = ({ boardCode, postId }: KebabMenuProps) => {
   const toggleDeletePost = () => {
     if (!window.confirm("정말 삭제하시겠습니까?")) return;
 
-    deletePostApi(boardCode, postId)
+    deletePostApi(postId)
       .then(() => {
         alert("게시글이 삭제되었습니다.");
         router.push(`/community/${boardCode}`);
diff --git a/src/app/community/[boardCode]/[postId]/Post.tsx b/src/app/community/[boardCode]/[postId]/Post.tsx
index 33421a8c..bc78ebe8 100644
--- a/src/app/community/[boardCode]/[postId]/Post.tsx
+++ b/src/app/community/[boardCode]/[postId]/Post.tsx
@@ -41,13 +41,13 @@ const Post = ({ post, boardCode, postId }: PostProps) => {
       if (isLiked) {
         setLikeCount((prev) => prev - 1);
         setIsLiked(false);
-        const res = await unlikePostApi(boardCode, postId);
+        const res = await unlikePostApi(postId);
         setLikeCount(res.data.likeCount);
         setIsLiked(res.data.isLiked);
       } else {
         setLikeCount((prev) => prev + 1);
         setIsLiked(true);
-        const res = await likePostApi(boardCode, postId);
+        const res = await likePostApi(postId);
         setLikeCount(res.data.likeCount);
         setIsLiked(res.data.isLiked);
       }
diff --git a/src/app/community/[boardCode]/[postId]/modify/PostModifyForm.tsx b/src/app/community/[boardCode]/[postId]/modify/PostModifyForm.tsx
index f0751a78..218b431d 100644
--- a/src/app/community/[boardCode]/[postId]/modify/PostModifyForm.tsx
+++ b/src/app/community/[boardCode]/[postId]/modify/PostModifyForm.tsx
@@ -60,7 +60,7 @@ const PostModifyForm = ({
 
   const submitPost = async () => {
     try {
-      await updatePostApi(boardCode, postId, {
+      await updatePostApi(postId, {
         postUpdateRequest: {
           postCategory: defaultPostCategory,
           title,
diff --git a/src/app/community/[boardCode]/[postId]/modify/page.tsx b/src/app/community/[boardCode]/[postId]/modify/page.tsx
index 15205bd7..71e89a01 100644
--- a/src/app/community/[boardCode]/[postId]/modify/page.tsx
+++ b/src/app/community/[boardCode]/[postId]/modify/page.tsx
@@ -18,7 +18,7 @@ const PostModifyPage = ({ params }: { params: { boardCode: string; postId: strin
   useEffect(() => {
     const fetchPost = async () => {
       try {
-        const res = await getPostDetailApi(boardCode, Number(postId));
+        const res = await getPostDetailApi(Number(postId));
         setPost(res.data);
       } catch (err) {
         // 에러 처리
diff --git a/src/app/community/[boardCode]/[postId]/page.tsx b/src/app/community/[boardCode]/[postId]/page.tsx
index 6cf6aaa8..9d23ca63 100644
--- a/src/app/community/[boardCode]/[postId]/page.tsx
+++ b/src/app/community/[boardCode]/[postId]/page.tsx
@@ -25,7 +25,7 @@ const PostPage = ({ params }: { params: { boardCode: string; postId: string } })
 
   useEffect(() => {
     const fetchPosts = async () => {
-      await getPostDetailApi(boardCode, postId)
+      await getPostDetailApi(postId)
         .then((res) => {
           setPost(res.data);
         })
diff --git a/src/app/community/[boardCode]/create/PostForm.tsx b/src/app/community/[boardCode]/create/PostForm.tsx
index 90efd285..1d56123e 100644
--- a/src/app/community/[boardCode]/create/PostForm.tsx
+++ b/src/app/community/[boardCode]/create/PostForm.tsx
@@ -44,8 +44,9 @@ const PostForm = ({ boardCode }: PostFormProps) => {
 
   const submitPost = async () => {
     try {
-      const res = await createPostApi(boardCode, {
+      const res = await createPostApi({
         postCreateRequest: {
+          boardCode: boardCode,
           postCategory: isQuestion ? "질문" : "자유",
           title: titleRef.current?.querySelector("textarea")?.value || "",
           content,
diff --git a/src/app/score/submit/gpa/GpaSubmitForm.tsx b/src/app/score/submit/gpa/GpaSubmitForm.tsx
index 120bcbc4..e0a3a972 100644
--- a/src/app/score/submit/gpa/GpaSubmitForm.tsx
+++ b/src/app/score/submit/gpa/GpaSubmitForm.tsx
@@ -6,7 +6,6 @@ import { useRef, useState } from "react";
 
 import clsx from "clsx";
 
-import { uploadGpaFileApi } from "@/services/file";
 import { postGpaScoreApi } from "@/services/score";
 
 import BlockBtn from "@/components/button/BlockBtn";
@@ -42,15 +41,11 @@ const GpaSubmitForm = () => {
 
     async function postData() {
       try {
-        const fileUploadRes = await uploadGpaFileApi(file as File);
-        const fileUrl = fileUploadRes.data.fileUrl;
-
-        // API 호출
         const res = await postGpaScoreApi({
           gpa: Number(gpa),
           gpaCriteria: gpaCriteria as number,
           issueDate: "2025-01-01",
-          gpaReportUrl: fileUrl,
+          file: file as File,
         });
 
         router.push("/score");
diff --git a/src/app/score/submit/language-test/LanguageTestSubmitForm.tsx b/src/app/score/submit/language-test/LanguageTestSubmitForm.tsx
index 6ab7b371..b08f97ff 100644
--- a/src/app/score/submit/language-test/LanguageTestSubmitForm.tsx
+++ b/src/app/score/submit/language-test/LanguageTestSubmitForm.tsx
@@ -6,8 +6,8 @@ import { useRef, useState } from "react";
 
 import clsx from "clsx";
 
-import { uploadLanguageTestFileApi } from "@/services/file";
 import { postLanguageTestScoreApi } from "@/services/score";
+import { validateLanguageScore } from "@/utils/scoreUtils";
 
 import BlockBtn from "@/components/button/BlockBtn";
 import RoundBtn from "@/components/button/RoundBtn";
@@ -36,48 +36,20 @@ const LanguageTestSubmitForm = () => {
     }
 
     // 점수 유효성 검사
-    if (testType === "TOEIC") {
-      if (!(Number(score) >= 0 && Number(score) <= 990)) {
-        alert("TOEIC 점수는 0 ~ 990 사이여야 합니다.");
-        return;
-      }
-    }
-    if (testType === "TOEFL IBT") {
-      if (!(Number(score) >= 0 && Number(score) <= 120)) {
-        alert("TOEFL IBT 점수는 0 ~ 120 사이여야 합니다.");
-        return;
-      }
-    }
-    if (testType === "TOEFL ITP") {
-      if (!(Number(score) >= 310 && Number(score) <= 677)) {
-        alert("TOEFL ITP 점수는 310 ~ 677 사이여야 합니다.");
-        return;
-      }
-    }
-    if (testType === "IELTS") {
-      if (!(Number(score) >= 0 && Number(score) <= 9)) {
-        alert("IELTS 점수는 0 ~ 9 사이여야 합니다.");
-        return;
-      }
-    }
-    if (testType === "JLPT") {
-      if (!(Number(score) >= 0 && Number(score) <= 5)) {
-        alert("JLPT 점수는 0 ~ 5 사이여야 합니다.");
-        return;
-      }
+    try {
+      validateLanguageScore(testType, score);
+    } catch (err: any) {
+      alert(err.message);
+      return;
     }
 
     async function postData() {
       try {
-        const fileUploadRes = await uploadLanguageTestFileApi(file as File);
-        const fileUrl = fileUploadRes.data.fileUrl;
-
-        // API 호출
         const res = await postLanguageTestScoreApi({
           languageTestType: testType,
           languageTestScore: score,
           issueDate: "2025-01-01",
-          languageTestReportUrl: fileUrl,
+          file: file as File,
         });
 
         router.push("/score");
diff --git a/src/services/application.ts b/src/services/application.ts
index 27a932a3..38d4a80c 100644
--- a/src/services/application.ts
+++ b/src/services/application.ts
@@ -14,19 +14,19 @@ import {
 // DEPRECATED
 export const postApplicationScoreApi = (
   applicationScoreRequest: ApplicationScoreRequest,
-): Promise<AxiosResponse<null>> => axiosInstance.post("/application/score", applicationScoreRequest);
+): Promise<AxiosResponse<null>> => axiosInstance.post("/applications/score", applicationScoreRequest);
 
 // DEPRECATED
 export const postApplicationUniversityApi = (
   applicationUniversityRequest: ApplicationUniversityRequest,
-): Promise<AxiosResponse<null>> => axiosInstance.post("/application/university", applicationUniversityRequest);
+): Promise<AxiosResponse<null>> => axiosInstance.post("/applications/university", applicationUniversityRequest);
 
 export const postApplicationApi = (
   request: SubmitApplicationRequest,
-): Promise<AxiosResponse<SubmitApplicationResponse>> => axiosInstance.post("/application", request);
+): Promise<AxiosResponse<SubmitApplicationResponse>> => axiosInstance.post("/applications", request);
 
 export const getApplicationListApi = (): Promise<AxiosResponse<ApplicationListResponse>> =>
-  axiosInstance.get("/application");
+  axiosInstance.get("/applications");
 
 export const getMyApplicationStatusApi = (): Promise<AxiosResponse<ApplicationStatusResponse>> =>
-  axiosInstance.get("/application/status");
+  axiosInstance.get("/applications/status");
diff --git a/src/services/community.ts b/src/services/community.ts
index e5d825cd..d0312a23 100644
--- a/src/services/community.ts
+++ b/src/services/community.ts
@@ -14,19 +14,15 @@ import {
 } from "@/types/community";
 
 export const getPostListApi = (boardCode: string, category: string | null = null): Promise<AxiosResponse<ListPost[]>> =>
-  axiosInstance.get(`/communities/${boardCode}`, {
+  axiosInstance.get(`/boards/${boardCode}`, {
     params: {
       category,
     },
   });
 
-export const getPostDetailApi = (boardCode: string, postId: number): Promise<AxiosResponse<Post>> =>
-  axiosInstance.get(`/communities/${boardCode}/posts/${postId}`);
+export const getPostDetailApi = (postId: number): Promise<AxiosResponse<Post>> => axiosInstance.get(`/posts/${postId}`);
 
-export const createPostApi = (
-  boardCode: string,
-  postCreateRequest: PostCreateRequest,
-): Promise<AxiosResponse<PostIdResponse>> => {
+export const createPostApi = (postCreateRequest: PostCreateRequest): Promise<AxiosResponse<PostIdResponse>> => {
   const convertedRequest: FormData = new FormData();
   convertedRequest.append(
     "postCreateRequest",
@@ -36,13 +32,12 @@ export const createPostApi = (
     convertedRequest.append("file", file);
   });
 
-  return axiosInstance.post(`/communities/${boardCode}/posts`, convertedRequest, {
+  return axiosInstance.post(`/posts`, convertedRequest, {
     headers: { "Content-Type": "multipart/form-data" },
   });
 };
 
 export const updatePostApi = (
-  boardCode: string,
   postId: number,
   postUpdateRequest: PostUpdateRequest,
 ): Promise<AxiosResponse<PostIdResponse>> => {
@@ -54,26 +49,25 @@ export const updatePostApi = (
   postUpdateRequest.file.forEach((file) => {
     convertedRequest.append("file", file);
   });
-  return axiosInstance.patch(`/communities/${boardCode}/posts/${postId}`, convertedRequest, {
+  return axiosInstance.patch(`/posts/${postId}`, convertedRequest, {
     headers: { "Content-Type": "multipart/form-data" },
   });
 };
 
-export const deletePostApi = (boardCode: string, postId: number): Promise<AxiosResponse<PostIdResponse>> =>
-  axiosInstance.delete(`/communities/${boardCode}/posts/${postId}`);
+export const deletePostApi = (postId: number): Promise<AxiosResponse<PostIdResponse>> =>
+  axiosInstance.delete(`/posts/${postId}`);
 
-export const likePostApi = (boardCode, postId: number): Promise<AxiosResponse<PostLikeResponse>> =>
-  axiosInstance.post(`/communities/${boardCode}/posts/${postId}/like`);
+export const likePostApi = (postId: number): Promise<AxiosResponse<PostLikeResponse>> =>
+  axiosInstance.post(`/posts/${postId}/like`);
 
-export const unlikePostApi = (boardCode, postId: number): Promise<AxiosResponse<PostLikeResponse>> =>
-  axiosInstance.delete(`/communities/${boardCode}/posts/${postId}/like`);
+export const unlikePostApi = (postId: number): Promise<AxiosResponse<PostLikeResponse>> =>
+  axiosInstance.delete(`/posts/${postId}/like`);
 
 export const createCommentApi = (
-  postId: number,
   commentCreateRequest: CommentCreateRequest,
-): Promise<AxiosResponse<CommentIdResponse>> => axiosInstance.post(`/posts/${postId}/comments`, commentCreateRequest);
+): Promise<AxiosResponse<CommentIdResponse>> => axiosInstance.post(`/comments`, commentCreateRequest);
 
 export const deleteCommentApi = (postId: number, commentId: number): Promise<AxiosResponse<CommentIdResponse>> =>
-  axiosInstance.delete(`/posts/${postId}/comments/${commentId}`);
+  axiosInstance.delete(`/comments/${commentId}`);
 
 // export const updateCommentApi
diff --git a/src/services/score.ts b/src/services/score.ts
index 6984ae67..51dfd0c0 100644
--- a/src/services/score.ts
+++ b/src/services/score.ts
@@ -10,12 +10,12 @@ import {
 } from "@/types/score";
 
 export const postGpaScoreApi = (request: SubmitGpaScoreRequest): Promise<AxiosResponse<null>> =>
-  axiosInstance.post("/score/gpa", request);
+  axiosInstance.post("/scores/gpas", request, { headers: { "Content-Type": "multipart/form-data" } });
 
 export const postLanguageTestScoreApi = (request: SubmitLanguageTestScoreRequest): Promise<AxiosResponse<null>> =>
-  axiosInstance.post("/score/languageTest", request);
+  axiosInstance.post("/scores/language-tests", request, { headers: { "Content-Type": "multipart/form-data" } });
 
-export const getMyGpaScoreApi = (): Promise<AxiosResponse<MyGpaScoreResponse>> => axiosInstance.get("/score/gpa");
+export const getMyGpaScoreApi = (): Promise<AxiosResponse<MyGpaScoreResponse>> => axiosInstance.get("/scores/gpas");
 
 export const getMyLanguageTestScoreApi = (): Promise<AxiosResponse<MyLanguageTestScoreResponse>> =>
-  axiosInstance.get("/score/languageTest");
+  axiosInstance.get("/scores/language-tests");
diff --git a/src/types/community.ts b/src/types/community.ts
index 09ac5b9e..f0579dba 100644
--- a/src/types/community.ts
+++ b/src/types/community.ts
@@ -57,6 +57,7 @@ export interface ListPost {
 
 export interface PostCreateRequest {
   postCreateRequest: {
+    boardCode: string;
     postCategory: string;
     title: string;
     content: string;
@@ -75,6 +76,7 @@ export interface PostUpdateRequest {
 }
 
 export interface CommentCreateRequest {
+  postId: number;
   content: string;
   parentId: number | null;
 }
diff --git a/src/types/score.ts b/src/types/score.ts
index 8d8b2927..2b72cb49 100644
--- a/src/types/score.ts
+++ b/src/types/score.ts
@@ -2,14 +2,14 @@ export interface SubmitGpaScoreRequest {
   gpa: number;
   gpaCriteria: number;
   issueDate: string; // yyyy-MM-dd
-  gpaReportUrl: string;
+  file: Blob;
 }
 
 export interface SubmitLanguageTestScoreRequest {
   languageTestType: string;
   languageTestScore: string;
   issueDate: string; // yyyy-MM-dd
-  languageTestReportUrl: string;
+  file: Blob;
 }
 
 export interface GpaScore {
diff --git a/src/utils/scoreUtils.ts b/src/utils/scoreUtils.ts
new file mode 100644
index 00000000..16b5b2e9
--- /dev/null
+++ b/src/utils/scoreUtils.ts
@@ -0,0 +1,31 @@
+export const validateLanguageScore = (testType: string, score: string) => {
+  const numScore = Number(score);
+
+  if (testType === "TOEIC") {
+    if (!(numScore >= 0 && numScore <= 990)) {
+      alert("TOEIC 점수는 0 ~ 990 사이여야 합니다.");
+      throw new Error("TOEIC 점수는 0 ~ 990 사이여야 합니다.");
+    }
+  }
+  if (testType === "TOEFL IBT") {
+    if (!(numScore >= 0 && numScore <= 120)) {
+      alert("TOEFL IBT 점수는 0 ~ 120 사이여야 합니다.");
+      throw new Error("TOEFL IBT 점수는 0 ~ 120 사이여야 합니다.");
+    }
+  }
+  if (testType === "TOEFL ITP") {
+    if (!(numScore >= 310 && numScore <= 677)) {
+      throw new Error("TOEFL ITP 점수는 310 ~ 677 사이여야 합니다.");
+    }
+  }
+  if (testType === "IELTS") {
+    if (!(numScore >= 0 && numScore <= 9)) {
+      throw new Error("IELTS 점수는 0 ~ 9 사이여야 합니다.");
+    }
+  }
+  if (testType === "JLPT") {
+    if (!(numScore >= 1 && numScore <= 5)) {
+      throw new Error("JLPT 등급은 1 ~ 5 사이여야 합니다.");
+    }
+  }
+};