Help with teacher/student account management

I have a teacher account with several classes. I need some help figuring out how to do a couple things.

  1. How can I delete or deactivate a student account from a class?

  2. Can I correct a username (if there was a typo)?

  3. As a teacher, I can see that a student has 9 games started. However, when we login with his username, there are no games listed. Can that be fixed?

Thank you

@grazer, the admin and owner, can edit your account names. And the engine is still on beta. But he will fix this when possible