diff --git a/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/ClassroomMainVC.swift b/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/ClassroomMainVC.swift
index f015711a..bcf18818 100644
--- a/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/ClassroomMainVC.swift
+++ b/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/ClassroomMainVC.swift
@@ -43,7 +43,7 @@ class ClassroomMainVC: BaseVC {
     
     override func viewWillAppear(_ animated: Bool) {
         setUpMajorLabel()
-        tabBarController?.tabBar.isHidden = false
+        showTabbar()
         makeScreenAnalyticsEvent(screenName: "ClassRoom Tab", screenClass: ClassroomMainVC.className)
     }
 }
diff --git a/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/Info/InfoDetailVC.swift b/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/Info/InfoDetailVC.swift
index 02ef028d..c715833f 100644
--- a/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/Info/InfoDetailVC.swift
+++ b/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/Info/InfoDetailVC.swift
@@ -27,6 +27,7 @@ class InfoDetailVC: BaseVC {
             infoDetailTV.allowsSelection = false
             infoDetailTV.rowHeight  = UITableView.automaticDimension
             infoDetailTV.backgroundColor = .paleGray
+            infoDetailTV.showsVerticalScrollIndicator = true
         }
     }
     
@@ -71,7 +72,7 @@ class InfoDetailVC: BaseVC {
     }
     
     override func viewWillAppear(_ animated: Bool) {
-        self.tabBarController?.tabBar.isHidden = true
+        hideTabbar()
         addKeyboardObserver()
         optionalBindingData()
         makeScreenAnalyticsEvent(screenName: "ClassRoom_Info Tab", screenClass: InfoDetailVC.className)
diff --git a/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/Question/EntireQuestionListVC.swift b/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/Question/EntireQuestionListVC.swift
index 34eb43b8..556fc537 100644
--- a/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/Question/EntireQuestionListVC.swift
+++ b/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/Question/EntireQuestionListVC.swift
@@ -47,7 +47,7 @@ class EntireQuestionListVC: BaseVC {
     
     override func viewWillAppear(_ animated: Bool) {
         setUpRequestData(sortType: lastSortType)
-        self.tabBarController?.tabBar.isHidden = false
+        showTabbar()
         makeScreenAnalyticsEvent(screenName: "ClassRoom_Question Tab", screenClass: EntireQuestionListVC.className)
     }
 }
diff --git a/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/Question/QuestionMainVC.swift b/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/Question/QuestionMainVC.swift
index 2d3e85fe..ea7f2e69 100644
--- a/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/Question/QuestionMainVC.swift
+++ b/NadoSunbae-iOS/NadoSunbae-iOS/Screen/Classroom/VC/Question/QuestionMainVC.swift
@@ -14,6 +14,7 @@ class QuestionMainVC: BaseVC {
     // MARK: Properties
     private let questionSV = UIScrollView().then {
         $0.isScrollEnabled = true
+        $0.showsVerticalScrollIndicator = false
     }
     private let contentView = UIView()
     private let personalQuestionLabel = UILabel().then {