If you're already familiar with add-ons for Docs and Sheets, then you'll be excited to hear that Google is launching add-ons for Google Forms. Add-ons are tools created by Google developer partners that extend the features of Google Docs, Sheets...and now Forms.
The list of available add-ons for Forms is growing, many that are specifically valuable to Google Apps for Education users. You can access this list from the "Add-ons" menu in Forms, or through the Forms add-on store.
If you are unable to access the add-ons that may mean this feature is disabled for your domain. You can change this setting in the Admin Console via Google Apps->Drive->General Settings->"Allow users to install Google Docs add-ons".