Google Classroom User Authentication

We need a very simple process that allows our web platform to connect with Google Classroom. Google Classroom has APIs for authentication requirements but we need to have a connection between a User and a User and their specific Course User or Classroom. If that information can be retrieved in a call...we can separate students into their unique instances of our platform so teachers view only their own students. Currently, we have an SSO process in place that functions - but would require replicating for every course, teacher, and school to create hundreds of unique instances - something not manageable for an IT team to have to implement. Looking for a Google Classroom expert for assistance.