diff --git a/frontend/src/components/LectureForm/LectureForm.jsx b/frontend/src/components/LectureForm/LectureForm.jsx
index 09ef32c..aa88d59 100644
--- a/frontend/src/components/LectureForm/LectureForm.jsx
+++ b/frontend/src/components/LectureForm/LectureForm.jsx
@@ -58,7 +58,6 @@ export default function LectureForm({ title, topic, to = '..', initialValues = {
       endDate: new Date(endDate).toISOString(),
       time: time,
     };
-    console.log(lectureObject);
 
     const formData = new FormData();
     formData.append('lectureCreateRequest', new Blob([JSON.stringify(lectureObject)], { type: 'application/json' }));
@@ -161,6 +160,7 @@ export default function LectureForm({ title, topic, to = '..', initialValues = {
         {onCreate && (
           <div className={styles.inputField}>
             <label className={styles.label}>수업 이미지</label>
+            <label className={styles.secondary}>* 여백이 충분히 있고 배경이 투명한 이미지를 사용해 주세요</label>
             <input
               type="file"
               accept="image/*"
diff --git a/frontend/src/components/LectureForm/LectureForm.module.css b/frontend/src/components/LectureForm/LectureForm.module.css
index d594a1a..c1d92fd 100644
--- a/frontend/src/components/LectureForm/LectureForm.module.css
+++ b/frontend/src/components/LectureForm/LectureForm.module.css
@@ -72,6 +72,13 @@
   line-height: 1.4;
 }
 
+.secondary {
+  color: var(--text-color-secondary);
+  font-size: 14px;
+  line-height: 1.4;
+  font-weight: 400;
+}
+
 .input {
   background: var(--background-color);
   padding: 16px;
diff --git a/frontend/src/components/LectureHeader/LectureHeader.jsx b/frontend/src/components/LectureHeader/LectureHeader.jsx
index 2dfa40a..fb2efb1 100644
--- a/frontend/src/components/LectureHeader/LectureHeader.jsx
+++ b/frontend/src/components/LectureHeader/LectureHeader.jsx
@@ -28,17 +28,6 @@ export default function LectureHeader({ img, title, tutorImg, tutor, isLive = fa
           <h1 className={styles.title}>{title}</h1>
           <div className={styles.desc}>
             <div className={styles.tutor}>
-              {tutorImg ? (
-                <img
-                  src={tutorImg}
-                  alt="강사 사진"
-                  className={styles.tutorImg}
-                />
-              ) : (
-                <div className={styles.tutorImg}>
-                  <UserIcon />
-                </div>
-              )}
               <div>{tutor}</div>
             </div>
             <div>
diff --git a/frontend/src/components/LectureHeader/LectureHeader.module.css b/frontend/src/components/LectureHeader/LectureHeader.module.css
index e98c683..b43fbb2 100644
--- a/frontend/src/components/LectureHeader/LectureHeader.module.css
+++ b/frontend/src/components/LectureHeader/LectureHeader.module.css
@@ -58,18 +58,6 @@
   align-items: center;
 }
 
-.tutorImg {
-  display: flex;
-  justify-content: center;
-  align-items: center;
-  width: 48px;
-  height: 48px;
-  border-radius: 50%;
-  object-fit: cover;
-  stroke: var(--text-color-secondary);
-  border: 1px solid var(--border-color);
-}
-
 @keyframes glow {
   0% {
     box-shadow: 0 0 0 0 var(--error-color);
diff --git a/frontend/src/components/QuizForm/QuizCard.jsx b/frontend/src/components/QuizForm/QuizCard.jsx
index b734fc2..ab409f5 100644
--- a/frontend/src/components/QuizForm/QuizCard.jsx
+++ b/frontend/src/components/QuizForm/QuizCard.jsx
@@ -1,4 +1,4 @@
-import { useEffect, useState } from 'react';
+import { useState } from 'react';
 import styles from './QuizCard.module.css';
 import CloseIcon from '/src/assets/icons/close.svg?react';
 import PlusIcon from '/src/assets/icons/plus.svg?react';
@@ -6,12 +6,24 @@ import { Toggle } from '../Toggle';
 import { STATIC_URL } from '../../constants';
 
 export default function QuizCard({ quiz, updateQuiz, deleteQuiz }) {
+  const isChoice = quiz.choices.length > 0;
   const [question, setQuestion] = useState(quiz.question || '');
-  const [answer, setAnswer] = useState(Number(quiz.answer) || '');
+  const [answer, setAnswer] = useState(isChoice ? Number(quiz.answer) || 1 : quiz.answer || '');
   const [choices, setChoices] = useState(quiz.choices || [{ num: 1, content: '' }]);
   const [image, setImage] = useState(quiz.image || null);
   const [imagePreview, setImagePreview] = useState(quiz.image ? `${STATIC_URL}${quiz.image}` : null);
-  const [quizType, setQuizType] = useState('단답식');
+  const [quizType, setQuizType] = useState(isChoice ? '객관식' : '단답식');
+
+  const handleToggle = (type) => {
+    setQuizType(type);
+    if (type === '단답식') {
+      setAnswer('');
+      setChoices([]);
+      return;
+    }
+    setAnswer(1);
+    setChoices([{ num: 1, content: '' }]);
+  };
 
   const clearImage = () => {
     setImage(null);
@@ -75,10 +87,6 @@ export default function QuizCard({ quiz, updateQuiz, deleteQuiz }) {
     updateQuiz(quiz.id, { ...quiz, question, answer: choiceContent, choices, image });
   };
 
-  useEffect(() => {
-    quizType === '단답식' ? setAnswer('') : setAnswer(1);
-  }, [quizType]);
-
   return (
     <div className={styles.card}>
       <div className={styles.header}>
@@ -131,7 +139,7 @@ export default function QuizCard({ quiz, updateQuiz, deleteQuiz }) {
         <div className={styles.answerArea}>
           <Toggle
             active={quizType}
-            setActive={setQuizType}
+            setActive={handleToggle}
             choices={['단답식', '객관식']}
           />
           <input
diff --git a/frontend/src/pages/LivePage/LivePage.jsx b/frontend/src/pages/LivePage/LivePage.jsx
index 88278fe..52f2284 100644
--- a/frontend/src/pages/LivePage/LivePage.jsx
+++ b/frontend/src/pages/LivePage/LivePage.jsx
@@ -15,6 +15,9 @@ export default function LivePage() {
     const { data } = await instance.post(`${API_URL}/video/joinroom/${roomId}`).catch(() => {
       alert('방에 입장할 수 없습니다.');
       window.close();
+      setTimeout(() => {
+        window.location.href = '/';
+      }, 100);
     });
 
     return data.token;
@@ -37,7 +40,9 @@ export default function LivePage() {
           .post(`${API_URL}/video/deleteroom/${roomId}`)
           .catch(() => {})
           .finally(() => {
-            window.close();
+            setTimeout(() => {
+              window.close();
+            }, 200);
           });
       }}
     >
diff --git a/frontend/src/pages/StudentReportDetailPage/StudentReportDetailPage.jsx b/frontend/src/pages/StudentReportDetailPage/StudentReportDetailPage.jsx
index 3425bd3..97e825a 100644
--- a/frontend/src/pages/StudentReportDetailPage/StudentReportDetailPage.jsx
+++ b/frontend/src/pages/StudentReportDetailPage/StudentReportDetailPage.jsx
@@ -12,7 +12,6 @@ export default function StudentReportDetailPage() {
   const { allCount, correctCount, quizzes, title } = report;
   const score = Math.round((100 * correctCount) / allCount);
   const userType = useBoundStore((state) => state.userType);
-  console.log(userType);
 
   return (
     <div className={styles.wrapper}>