If your teachers tell you they can't connect Kaizena to Google Classroom because of this error:
Oops! Google Classroom won't let us do this! Please ensure your IT folks have enabled other applications to access your Classroom account.
Then you need to enable the Google Classroom API. Here's how:
From your Google Apps Admin console, click "Apps," "Google Apps," then "Classroom."
Choose "Data Access" and check the box for "Users can authorize apps to access their Google Classroom data."