What about Google Classroom integration?
How to sync Google Classroom rosters to Brilliant
Go to educator.brilliant.org/classes
Click the "Sync from Google Classroom" button
Follow the steps to use your Google account to sync your classes.
How to share a course or lesson using Google Classroom
Go to educator.brilliant.org/lessons
Filter by subject and suggested grade level or difficulty.
Search by topic and standards to find lessons that align with your daily instructional goals.
Click on the Google Classroom icon for the course, or scroll until you find an individual lesson you’d like to share instead.
If you’re not already, log in to your Google account associated with your school.
Choose which classes you would like to assign the content to, and what form the post will take (e.g. assignment, material etc). Click "GO".
You can decide which students will see the post, and if the assignment is for points. Once you have changed settings to your satisfaction, click the blue button on the top right corner ("Post" or "Assign").
For specific questions regarding the use of Google Classroom, please refer to the Google Classroom Help Center.