Admins - Pearson Arc Secure Browser Extension for PRoPL
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This article walks Administrators through installing the necessary Pearson Arc Secure Browser Extension for student PRoPL sessions on managed devices.
In addition to being able to individually install the Pearson Arc Secure Browser Extension for student PRoPL sessions, district/organizations can install them on managed devices depending on their setup.
Article Contents
Key Features and Expected Behavior
Overview of Browser Extension
The Pearson Arc Secure Browser Extension is a lightweight, privacy-first Chrome extension that enables secure, distraction-free assessment delivery directly from a school’s Learning Management System (LMS). It is designed to simplify the testing experience for students while ensuring test integrity without the need for complex lockdown software.
Key Features and Expected Behavior
When a student launches an Arc-compatible assessment the extension:
- Restricts access to other browser tabs, windows, and external applications.
- Runs in full-screen mode to minimize distractions.
- Monitors session activity and notifies proctors of breaches.
- Automatically returns students to the test in the secure environment if focus on the testing window is lost.
- Displays breach alerts and locks the test after repeated loss of focus on the testing window.
The Pearson Arc Browser Extension is required for delivery of the PRoPL assessments to students. Teachers do not need to install the extension to view the teacher dashboards for test administration and reporting.
When students starts their PRoPL assessment from the student dashboard, the Arc Secure Browser Extension will launch automatically and place the student into the Assessment Start screen.

If the Arc Browser Extension is not installed, the student will receive an on-screen message alerting them of the need to install the extension before they can being testing, even if they are only trying to access the practice assessment.

Device Requirements
The Arc Secure Browser Extension is designed to be compatible with the following devices and operating system and web browser combinations:
| Device | Operating System | Browser |
| Chromebooks | ChromeOS: Latest three versions | Chrome browser version 138.0.7204.158 or later. |
| MacBooks Mac Desktop |
MacOS: Version 13 or newer | Chrome browser version 138.0.7204.158 or later. Note: The Safari browser is not currently compatible. |
| Windows Laptop Windows Desktop |
Windows 10 or 11 | Chrome browser version 138.0.7204.158 or later. Note: The Edge browser is not currently compatible. |
| iPad | Not Supported | Not Supported |
Managed Chromebooks
There are two ways for Google Workspace administrators to deploy the extension on managed Chromebooks:
Option 1:
1. Log into the Google Admin console.
2. Click on Access Devices.
3. Click on Chrome Devices.
4. Click on Apps & extensions.
5. Click on Users & browsers.
6. Click on Additional Settings.
7. Click the Edit button in the Allow/block mode section under Chrome Web Store.
8. Select Block all apps, admin managed allowlist.

9. Select the organization unit where you wish to install the Chrome extension.
10. Click the + (plus) button and choose Add Chrome app or extension by ID.

11. Enter lejnbofknclafimlnbgnaaamehkchifm and click Save.
12. Click Allow Install to add the Secure Browser to the allow list.
Option 2:
1. Log into the Google management interface with your admin account.
2. Click on Access Devices.
3. Click on Chrome Devices.
4. Click on Apps & extensions.
5. Select the organization unit where you wish to install the Chrome extension.
6. Click the + (plus) button and choose Add Chrome app or extension by ID.
7. Enter lejnbofknclafimlnbgnaaamehkchifm and click Save.
8. Change the Installation Type to Force Install and click Save.
Managed MacBooks
- The Arc Browser Extension can be deployed to managed MacBooks centrally or individually.
- Follow your school IT policies and practices for managing Chrome browser extensions.
Managed Windows Devices
- The Arc Browser Extension can be deployed to managed Windows devices centrally or individually.
- Follow your school IT policies and practices for managing Chrome browser extensions.