For the permanent FAQ on this topic, see this article.

Teachers who are using Google Classroom can now import their student roster to Khan Academy to quickly set up their class!

To import your Google Classroom class, first choose “New class” to set up a new class, or “Add new students” to add students to an existing class from your Manage Students tab.

You’ll then have three options that you can proceed with.  Choose “Import from Google Classroom.”

You’ll be asked to give Khan Academy permission to see which classes you teach on Google Classroom. Once you do that, choose the class that you want to import to Khan Academy.

Your students will then receive email invitations to join Khan Academy and become students in your class. If they already have a Khan Academy account registered to that email address, they’ll be invited to join your class with their existing account.

If you ever need to update your class roster to sync with Google Classroom again, just click “Add new students” or click the refresh icon underneath your class name:

Note that syncing with Google Classroom will never delete students from your Khan Academy class. It will only add students who are not already in your class. Additionally, importing will never change your Google Classroom roster.

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A note on this - we're continuing to explore ways that Khan Academy might work with Google Classroom in the future.  Are there any features that would be especially helpful to you?  Let us know in the comments!