Push out extensions via Google Apps for Education:
Log into the Google Admin console.
Go to Device Management > Chrome > Apps & extensions>User&browsers
Select your OU.
Click on the Addition Settings Cog
Click on Edit under the Chrome Web Store
Select your Chrome web store app setting.
Click on Save.
Click on the X in the upper right to close the settings.
Select your OU.
Click on the yellow circle with the plus sign in it.
Select add from the Chrome Web Store.
"Recommended Apps and Extensions".
Search for and select the extensions that you want to add to the user's profile.
Wait for the app to appear in the middle column.
Click on the app to set install permissions.
For additional information about the Admin Console see Chrome for education Help
Create User Accounts & Permissions
Easiest Solution! Fill out our District-Wide Domain Request Form
If you have Proxy / Firewall filter in place you may need to Whitelist URLs.
Add the wildcard URL, *.donjohnston.net to cover sign-in and data sync.
For additional information on deployment and whitelist/permissions see help.donjohnston.net/it-resources