diff --git a/frontend/src/assets/icons/compass.svg b/frontend/src/assets/icons/compass.svg
new file mode 100644
index 0000000..b71c924
--- /dev/null
+++ b/frontend/src/assets/icons/compass.svg
@@ -0,0 +1,8 @@
+<svg width="49" height="49" viewBox="0 0 49 49" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g id="Compass">
+<g id="Icon">
+<path d="M24.5 44.5C35.5457 44.5 44.5 35.5457 44.5 24.5C44.5 13.4543 35.5457 4.5 24.5 4.5C13.4543 4.5 4.5 13.4543 4.5 24.5C4.5 35.5457 13.4543 44.5 24.5 44.5Z"  stroke-width="4" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M32.98 16.02L28.74 28.74L16.02 32.98L20.26 20.26L32.98 16.02Z"  stroke-width="4" stroke-linecap="round" stroke-linejoin="round"/>
+</g>
+</g>
+</svg>
diff --git a/frontend/src/assets/icons/plus.svg b/frontend/src/assets/icons/plus.svg
new file mode 100644
index 0000000..b51a170
--- /dev/null
+++ b/frontend/src/assets/icons/plus.svg
@@ -0,0 +1,5 @@
+<svg width="49" height="49" viewBox="0 0 49 49" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g id="Plus circle">
+<path id="Icon" d="M24.5 16.5V32.5M16.5 24.5H32.5M44.5 24.5C44.5 35.5457 35.5457 44.5 24.5 44.5C13.4543 44.5 4.5 35.5457 4.5 24.5C4.5 13.4543 13.4543 4.5 24.5 4.5C35.5457 4.5 44.5 13.4543 44.5 24.5Z" stroke-width="4" stroke-linecap="round" stroke-linejoin="round"/>
+</g>
+</svg>
diff --git a/frontend/src/components/ClassCard/ClassCard.jsx b/frontend/src/components/ClassCard/ClassCard.jsx
index 8a7f252..2691b29 100644
--- a/frontend/src/components/ClassCard/ClassCard.jsx
+++ b/frontend/src/components/ClassCard/ClassCard.jsx
@@ -1,5 +1,6 @@
 import { Link } from 'react-router-dom';
 import styles from './ClassCard.module.css';
+import CompassIcon from '/src/assets/icons/compass.svg?react';
 
 export default function ClassCard({ img, path, children }) {
   return (
@@ -7,11 +8,17 @@ export default function ClassCard({ img, path, children }) {
       to={path}
       className={styles.card}
     >
-      <img
-        src={img}
-        alt="강의 이미지"
-        className={styles.thumbnail}
-      />
+      {img ? (
+        <img
+          src={img}
+          alt="강의 이미지"
+          className={styles.thumbnail}
+        />
+      ) : (
+        <div className={styles.thumbnail}>
+          <CompassIcon />
+        </div>
+      )}
       <div>{children}</div>
     </Link>
   );
diff --git a/frontend/src/components/ClassCard/ClassCard.module.css b/frontend/src/components/ClassCard/ClassCard.module.css
index 1741799..ea3e80c 100644
--- a/frontend/src/components/ClassCard/ClassCard.module.css
+++ b/frontend/src/components/ClassCard/ClassCard.module.css
@@ -9,9 +9,13 @@
 }
 
 .thumbnail {
+  display: flex;
+  justify-content: center;
+  align-items: center;
   width: 295px;
   height: 220px;
   border-radius: 20px;
   background-color: var(--background-secondary);
+  stroke: var(--text-color);
   box-sizing: border-box;
 }
diff --git a/frontend/src/components/LiveRoom/LiveRoom.jsx b/frontend/src/components/LiveRoom/LiveRoom.jsx
index 5295de5..38d94c6 100644
--- a/frontend/src/components/LiveRoom/LiveRoom.jsx
+++ b/frontend/src/components/LiveRoom/LiveRoom.jsx
@@ -115,7 +115,10 @@ export default function LiveRoom() {
                 </FocusLayoutContainer>
               </div>
             )}
-            <ControlBar controls={{ chat: false, leave: false, screenShare: role === '강사' }} />
+            <ControlBar
+              variation="minimal"
+              controls={{ chat: false, leave: true, screenShare: role === '강사' }}
+            />
           </div>
           <ChatRoom />
         </LayoutContextProvider>
diff --git a/frontend/src/components/SideBar/SideBar.module.css b/frontend/src/components/SideBar/SideBar.module.css
index 3f73801..3d9668b 100644
--- a/frontend/src/components/SideBar/SideBar.module.css
+++ b/frontend/src/components/SideBar/SideBar.module.css
@@ -18,7 +18,7 @@
 .groupList {
   display: flex;
   flex-direction: column;
-  gap: 16px;
+  gap: 8px;
   list-style: none;
   padding: 0;
   margin: 0;
diff --git a/frontend/src/components/SideBar/SideLink.module.css b/frontend/src/components/SideBar/SideLink.module.css
index df232f1..3eec140 100644
--- a/frontend/src/components/SideBar/SideLink.module.css
+++ b/frontend/src/components/SideBar/SideLink.module.css
@@ -15,5 +15,4 @@
 
 .active {
   font-weight: 700;
-  text-decoration: underline;
 }
diff --git a/frontend/src/hooks/api/useNotices.js b/frontend/src/hooks/api/useNotices.js
index b6fd154..dd4b671 100644
--- a/frontend/src/hooks/api/useNotices.js
+++ b/frontend/src/hooks/api/useNotices.js
@@ -1,9 +1,9 @@
-import { useQuery } from '@tanstack/react-query';
+import { useSuspenseQuery } from '@tanstack/react-query';
 import instance from '../../utils/axios/instance';
 import { API_URL } from '../../constants';
 
 export function useNotices(lectureId, page = 0) {
-  return useQuery({
+  return useSuspenseQuery({
     queryKey: ['noticelist', lectureId, page],
     queryFn: () => instance.get(`${API_URL}/board?lectureId=${lectureId}&category=announcement&pageNo=${page}`),
   });
diff --git a/frontend/src/pages/LivePage/LivePage.jsx b/frontend/src/pages/LivePage/LivePage.jsx
index 5356bd2..2a12864 100644
--- a/frontend/src/pages/LivePage/LivePage.jsx
+++ b/frontend/src/pages/LivePage/LivePage.jsx
@@ -1,31 +1,29 @@
 import { LiveRoom } from '../../components/LiveRoom';
 import { useParams } from 'react-router-dom';
-import { useCallback, useEffect } from 'react';
+import { useCallback, useEffect, useState } from 'react';
 import { LiveKitRoom } from '@livekit/components-react';
 import instance from '../../utils/axios/instance';
 import { API_URL, ROOM_URL } from '../../constants';
-import useBoundStore from '../../store';
 import '@livekit/components-styles';
 import LoadingIndicator from '../../components/LoadingIndicator.jsx/LoadingIndicator';
 
 export default function LivePage() {
   const { roomId } = useParams();
+  const [liveToken, setLiveToken] = useState(null);
   const generateToken = useCallback(async () => {
     await instance.post(`${API_URL}/video/makeroom/${roomId}`);
-    const { data } = await instance.post(`${API_URL}/video/joinroom/${roomId}`);
+    const { data } = await instance.post(`${API_URL}/video/joinroom/${roomId}`).catch(() => {
+      alert('방에 입장할 수 없습니다.');
+    });
 
     return data.token;
   }, [roomId]);
 
-  const liveToken = useBoundStore((state) => state.liveToken);
-
   useEffect(() => {
-    if (!liveToken) {
-      generateToken().then((token) => {
-        useBoundStore.setState({ liveToken: token });
-      });
-    }
-  }, [generateToken, liveToken]);
+    generateToken().then((token) => {
+      setLiveToken(token);
+    });
+  }, [generateToken]);
 
   return liveToken ? (
     <LiveKitRoom
@@ -33,6 +31,9 @@ export default function LivePage() {
       serverUrl={ROOM_URL}
       connect={true}
       data-lk-theme="default"
+      onDisconnected={() => {
+        instance.post(`${API_URL}/video/deleteroom/${roomId}`).catch(() => {});
+      }}
     >
       <LiveRoom />
     </LiveKitRoom>
diff --git a/frontend/src/pages/TeacherHomePage/TeacherHomePage.jsx b/frontend/src/pages/TeacherHomePage/TeacherHomePage.jsx
index 0236ca9..cc730ec 100644
--- a/frontend/src/pages/TeacherHomePage/TeacherHomePage.jsx
+++ b/frontend/src/pages/TeacherHomePage/TeacherHomePage.jsx
@@ -1,17 +1,19 @@
+import styles from './TeacherHomePage.module.css';
+import { Link } from 'react-router-dom';
 import { ClassCard } from '../../components/ClassCard';
 import { ClassGrid } from '../../components/ClassGrid';
 import { MaxWidthLayout } from '../../components/Layout';
 import { useMyLectures } from '../../hooks/api/useMyLectures';
+import PlusIcon from '/src/assets/icons/plus.svg?react';
 
 export default function TeacherHomePage() {
   const { data: myLectures } = useMyLectures();
   const onGoingClasses = myLectures?.data ?? [];
-  console.log(onGoingClasses);
-  // TODO: 새 강의 만들기 스타일 추가, 추가 기능 필요시 추가
+
   return (
     <MaxWidthLayout>
       <ClassGrid title="내 강의">
-        {onGoingClasses.map?.((lecture) => (
+        {onGoingClasses.map((lecture) => (
           <ClassCard
             key={lecture.id}
             path={`/lecture/${lecture.id}`}
@@ -20,7 +22,13 @@ export default function TeacherHomePage() {
             {lecture.title}
           </ClassCard>
         ))}
-        <ClassCard path={'/lecture/create'}>새 강의 만들기</ClassCard>
+        <Link
+          to={'/lecture/create'}
+          className={styles.add}
+        >
+          <PlusIcon />
+          <span>새 강의 만들기</span>
+        </Link>
       </ClassGrid>
     </MaxWidthLayout>
   );
diff --git a/frontend/src/pages/TeacherHomePage/TeacherHomePage.module.css b/frontend/src/pages/TeacherHomePage/TeacherHomePage.module.css
new file mode 100644
index 0000000..0e94798
--- /dev/null
+++ b/frontend/src/pages/TeacherHomePage/TeacherHomePage.module.css
@@ -0,0 +1,21 @@
+.add {
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+  gap: 20px;
+  margin-bottom: 32px;
+  background-color: var(--background);
+  color: var(--text-color);
+  stroke: var(--text-color);
+  font-size: 16px;
+  font-style: normal;
+  font-weight: 400;
+  line-height: 1.4;
+  border-radius: 20px;
+  transition: background-color 0.2s ease;
+
+  &:hover {
+    background-color: var(--background-secondary);
+  }
+}
diff --git a/frontend/src/store/index.js b/frontend/src/store/index.js
index 7bf42e8..033afc3 100644
--- a/frontend/src/store/index.js
+++ b/frontend/src/store/index.js
@@ -3,7 +3,6 @@ import { userTypeSlice } from './userTypeSlice';
 import { tokenSlice } from './tokenSlice';
 import { userNameSlice } from './userNameSlice';
 import { persist } from 'zustand/middleware';
-import { liveSlice } from './liveSlice';
 
 const useBoundStore = create(
   persist(
@@ -11,7 +10,6 @@ const useBoundStore = create(
       ...userTypeSlice(...a),
       ...tokenSlice(...a),
       ...userNameSlice(...a),
-      ...liveSlice(...a),
     }),
     { name: 'bound-store' }
   )
diff --git a/frontend/src/store/liveSlice.js b/frontend/src/store/liveSlice.js
deleted file mode 100644
index 12e7014..0000000
--- a/frontend/src/store/liveSlice.js
+++ /dev/null
@@ -1,6 +0,0 @@
-export const liveSlice = (set) => ({
-  liveToken: null,
-  setLiveToken: (liveToken) => set({ liveToken }),
-  participants: 0,
-  setParticipants: (participants) => set({ participants }),
-});