LockDown Browser: AP Classroom Edition icon

LockDown Browser: AP Classroom Edition

by Respondus Inc · Workflow & Planning
Manifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

LockDown Browser is a custom browser that locks down the exam environment within specific learning and assessment systems

Users
8M
+1M in 30 days
Rating
1.6 / 5
+0.33 in 30 days
Ratings
166
+9 in 30 days
Store rank
#58
#57 among extensions
Version
0.4.79
updated 26 Mar 2026

Users

monthly, 3 years
05M10MMar 2024Jul 2025Oct 2026
Latest, 15 Oct 2026: 8,000,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
391179Mar 2024Jul 2025Oct 2026
Latest, 15 Oct 2026: 166 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About LockDown Browser: AP Classroom Edition

Teachers have the option to require the LockDown Browser: AP Classroom Edition for any online quiz. While taking an online assignment using the LockDown Browser, this extension will provide a secure environment for students, preventing them from going to other URLs, switching applications, copying questions or printing. It essentially locks them into the AP Classroom test player until the assignment is submitted for grading. The LockDown Browser: AP Classroom Edition extension is only for Chromebooks. Note to Managed Chromebook Administrators: This supersedes AP Classroom’s Lockdown Brower kiosk application (called “College Board”). This extension is ONLY used by College Board’s AP Classroom platform to support student practice within this platform. Any data collected through this Chrome Extension is only used by College Board and its partners to deliver the AP Classroom services. For more information, go to the AP Services Terms and Conditions (https://secure-media.collegeboard.org/apc/ap-services-terms-conditions.pdf) This is NOT a limited-feature version and there are NO advertisements of any type.

Growth

WindowUsersChangeRatingsRating
7 days−1M−11.1%+4+0.29
30 days+1M+14.3%+9+0.33
6 months0+0.0%−5+0.39
1 year+8M–+55+0.40

Version history

6 versions recorded
0.4.7926 Mar 2026
0.4.00.0410 Mar 2025
0.3.00.08516 Dec 2024
0.3.00.05511 Sep 2024
0.3.00.0544 Apr 2024
0.3.00.0418 Feb 2024

Details

Category
Workflow & Planning
First seen
8 Feb 2024
Size
4.5 MB
Languages
de, en, es, fr, it
Pricing
Free
Privacy policy
web.respondus.com
Support
apclassroom.clickhelp.co
Extension ID
djpknfecbncogekjnjppojlaipeobkmo

Permissions and risk

Elevated riskimpact 4, likelihood 2
Permissions
system.displayhistorycookiesstoragewebNavigationwebRequesttabsactiveTabscriptingmanagementcontentSettingsbrowsingDatadeclarativeNetRequestWithHostAccessclipboardReadclipboardWritewallpaper
Site access
http://*/*https://*/*<all_urls>
Can read and change data on every website you visit.

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