Total learning minutes for an entire class?

Hello!

I am the math specialist at my school and I host a lot of competitions between grade levels in math. Is there a way to easily get the total learning minutes, skills leveled up, etc. for the entire class without having to manually add them all up? Ideally, I would like to be able to go to each class's dashboard, find the total minutes, then update a running leaderboard I have. 

Is this an option? Thank you!