Any recommendations for Storing Grades

Hi there,
We’re using your plugin to manage access for students and teachers… and we need some way for Teachers to track attendance and grades. We were using wpDataTables but it’s overloading our database with hundreds of tables – and doesn’t always work very well.

We have excel sheets that we typically allow our teachers to just mark an “X” on the week, and leave a grade on the last column. We need some how to do this within our WP website and to store them.

Can you recommend a solution that would work well?

Thanks so much for your time, expertise and brain cells…

-Shelly