diff --git a/src/app/structure/course.ts b/src/app/structure/course.ts
index b897536..ccaec5e 100644
--- a/src/app/structure/course.ts
+++ b/src/app/structure/course.ts
@@ -1,4 +1,7 @@
 import { IUser } from './user';
+import { IQuiz } from './quiz';
+import { ITest } from './test';
+import { IForum } from './forum';
 
 export type ICourse = {
     id: string | number,
@@ -6,9 +9,24 @@ export type ICourse = {
     name: string,
     description?: string,
     code: string,
-    teacher : IUser,
-    chapterList: Array<IChapter>;
-    enrolledList: Array<IUser>;
+    teacher: IUser,
+    chapterList: Array<IChapter>,
+    enrolledList: Array<IUser>,
+    timeTable: Array<ISchedule>,
+    testList: Array<ITest>,
+    forum: IForum
+};
+
+export type ISchedule = {
+    id: string | number,
+    dateTime: Date,
+    attendanceList: Array<IAttendance>
+};
+
+export type IAttendance = {
+    student: IUser,
+    status: 'PRESENT' | 'ABSENT' | 'LATE',
+    additionalNote: string
 };
 
 export type IChapter = {
@@ -23,25 +41,26 @@ export type ITopic = {
     id: string | number,
     name: string,
     description?: string,
-    media: IVideo | IAudio | IText,
+    type: 'VIDEO' | 'AUDIO' | 'RICH_TEXT' | 'QUIZ'
+    media: IVideo | IAudio | IRichText | IQuiz,
     attachments: Array<IAttachment>,
 };
 
-type IVideo = {
+export type IVideo = {
     id: string | number,
     url: string,
     transcript: string,
     notes: Array<INotes>
 };
 
-type IAudio = {
+export type IAudio = {
     id: string | number,
     url: string,
     transcript: string,
     notes: Array<INotes>
 };
 
-type INotes = {
+export type INotes = {
     id: string | number,
     seekTime: string,
     type: 'PUBLIC' | 'PRIVATE',
@@ -49,19 +68,19 @@ type INotes = {
     createdBy: IUser
 };
 
-type IText = {
+export type IRichText = {
     id: string | number,
     transcript: string
 };
 
-type IAttachment = {
+export type IAttachment = {
     id: string | number,
     name: string,
     description?: string,
     url: string
 };
 
-type IResource = {
+export type IResource = {
     id: string,
     name: string,
     description?: string,
diff --git a/src/app/structure/forum.ts b/src/app/structure/forum.ts
new file mode 100644
index 0000000..3615f7e
--- /dev/null
+++ b/src/app/structure/forum.ts
@@ -0,0 +1,45 @@
+import { IUser } from './user';
+
+export type IForum = {
+    id: string | number,
+    name: string,
+    description?: string,
+    moderatorList: Array<IUser>,
+    postList: Array<IPost>
+};
+
+export type IPost = {
+    id: string | number,
+    heading: string,
+    description: string,
+    isBookmarked: boolean,
+    hashTags: Array<string>,
+    taggedFriends: Array<IUser>,
+    externalLink: string,
+    files: Array<Blob>,
+    author: IUser,
+    dateTime: Date,
+    likedUsers: Array<IUser>,
+    dislikedUsers: Array<IUser>,
+    reports: Array<IReport>
+    commentList: Array<IComment>,
+    answerList: Array<IPost>
+};
+
+export type IComment = {
+    id: string | number,
+    description: string,
+    author: IUser,
+    dateTime: Date,
+    likedUsers: Array<IUser>,
+    dislikedUsers: Array<IUser>,
+    reports: Array<IReport>,
+    replyList: Array<IComment>,
+    replyThreadLimit: number
+}
+
+export type IReport = {
+    user: IUser,
+    description: string,
+    dateTime: Date
+};
diff --git a/src/app/structure/quiz.ts b/src/app/structure/quiz.ts
new file mode 100644
index 0000000..057a965
--- /dev/null
+++ b/src/app/structure/quiz.ts
@@ -0,0 +1,33 @@
+import { IUser } from './user';
+
+export type IQuiz = {
+    id: string | number,
+    name: string,
+    description?: string,
+    questionList: Array<IQuestion>,
+    quizAttendanceList: Array<IQuizAttendance>,
+    canRetake: boolean
+};
+
+export type IQuizAttendance = {
+    student: IUser,
+    answerList: Array<IAnswer>
+};
+
+export type IAnswer = {
+    questionId: string,
+    answer: string
+};
+
+export type IQuestion = {
+    id: string | number,
+    question: string,
+    answer: string,
+    type: 'SINGLE_SELECT' | 'MULTI_SELECT' | 'FILL_IN_THE_BLANK',
+    optionList?: Array<IOption>
+};
+
+export type IOption = {
+    id: string | number,
+    heading: string
+};
diff --git a/src/app/structure/test.ts b/src/app/structure/test.ts
new file mode 100644
index 0000000..ca0a7b6
--- /dev/null
+++ b/src/app/structure/test.ts
@@ -0,0 +1,54 @@
+import { IUser } from './user';
+
+export type ITest = {
+    id: string | number,
+    dateTime: Date,
+    durationInMinutes: number,
+    description?: string,
+    totalMarks: number,
+    rules: string,
+    categoricalQuestionList: Array<ICategory>,
+    canRetake: boolean,
+    testAttendanceList: Array<ITestAttendance>,
+};
+
+export type ITestAttendance = {
+    student: IUser,
+    answerList: Array<IAnswer>,
+    evaluator: IUser,
+};
+
+export type IAnswer = {
+    questionId: string,
+    answer: string,
+    status: 'CORRECT' | 'WRONG' | 'PARTIAL' // Using this so that the teacher can check the theoritical answers and decide the status,
+    marksAllotted?: string // For providing partial marks based on the textual answer written by the student
+};
+
+export type ICategory = {
+    unitValue: number,
+    maximumMarks: number, // So the teacher can add extra questions
+    description?: string,
+    question: IQuestion,
+};
+
+export type IQuestion = {
+    id: string | number,
+    heading: string,
+    answer: string | Array<string>
+    type: 'TEXT' | 'SINGLE_SELECT' | 'MULTI_SELECT' | 'MATCH_THE_FOLLOWING',
+    options?: Array<IOption>,
+    leftGroup?: Array<IMatchOption>,
+    rightGroup?: Array<IMatchOption>,
+};
+
+export type IOption = {
+    id: string | number,
+    name: string,
+};
+
+export type IMatchOption = {
+    id: string,
+    color: string,
+    name: string
+};