Highlights is an incredibly powerful and useful tool for teachers. In order to get maximal use out of Highlights, we advise administrators apply the following settings in their Google Admin Console, which will improve performance, reduce errors and limit the possibility of student interference in the tool.
In this article:
- Deploying the Highlights extension
- Enable Chrome Management
- Allow screenshots
- Block apps and extensions
- Block interfering URLs
- Other steps to prevent Highlights interruptions
Select appropriate student Organization Unit(s) (OU's) and add the Highlights extension to each. If you have multiple student OU's to which you will add Highlights, you will need to repeat this process for each OU.
Device management > Chrome management > User settings > (select the student OU in the left sidebar)
Scroll down to:
Apps and Extensions > Force-installed Apps and Extensions, and click Manage force-installed apps
If you do not have an OU structure, it is also possible to deploy the extension to the root of your domain.
- Sign in to your administrator account for the student domain, and navigate to admin.google.com.
- Click on Device Management.
- Click on Chrome Management on the left-hand menu.
- Click the menu icon next to the Chrome Management title, and choose "ON for everyone".
- Click User settings from the Chrome Management menu.
- If applicable, choose the organizational unit (OU) for which you wish to apply the settings. This OU should contain all students that will use the Highlights extension.
- Scroll down to the Content section.
- Under Screenshot, select Enable screenshot.
Some apps and extensions can interfere with Highlights. We strongly recommend blocking the following extensions:
- Chrome Apps and Extensions Developer Tool
- IChrome Tab
- ChromeVox - Alternatively, you can navigate to Device Management > Chrome Management > User Settings and select Turn off accessibility settings on sign-in screen upon logout
Apps and extensions can be blocked with either a blacklist (allow all except a list of specific apps/extensions) or whitelist (block all except a list of specific apps/extensions).
To create a blacklist:
- From the User Settings menu, scroll to Apps and Extensions.
- After Allow or Block All Apps and Extensions, choose Allow all apps and extensions except the ones I block.
- At Allowed Apps and Extensions, click Manage
- Click Chrome Web Store
- Search for the apps you'd like to blacklist, by name:
- Choose to Add each app to the blacklist
- Click Save
- The number of "blocked" apps or extensions should have increased.
- Click SAVE in the lower right-hand corner.
Some URLs can be used to stop Highlights and other extensions from working properly.
Hapara recommends blocking these URLs:
- From User Settings, scroll down to the Content section.
- Under URL Blocking, type the following in the URL Blacklist section:
|URL||Reason to blacklist|
|*/html/crosh.html||Chrome Shell Terminal lets user manipulate Chrome|
|chrome://settings||Lets user change Chrome settings|
|chrome://settings-frame||Lets user change Chrome settings|
Students can use the Chrome Task Manager to end processes - including the Highlights extension. Hāpara recommends disabling this ability by taking the following steps:
- From User Settings, scroll down to the Apps and Extensions section.
- Under Task Manager, select Block users from ending processes with the Chrome task manager.
Students can also use the Chrome Developer Tools to inspect, break and end processes - including the Highlights extension. Hāpara recommends disabling this ability by taking the following steps:
- From User Settings, scroll down to the User Experience section.
- Under Developer Tools, select Never allow use of built-in developer tools.
By default, Incognito Mode on Chrome loads no extensions, so it can potentially be used to circumvent Highlights. For this reason, Hāpara recommends disabling this ability by taking the following steps:
- From User Settings, scroll down to the Security section.
- Under Incognito Mode, select Disallow Incognito Mode.
A weakness in ChromeVox allows students to access Incognito Mode even if this mode has been disabled. Hāpara recommends blocking this weakness by taking the following steps: