School membership: what to expect?


I’ve purchased a school membership for the class I’m teaching (60 students). It’s an amazing idea from c9 to offer this option. I just want to understand better:

  1. There is a 15 workspace creation limit per minute
  2. There is a 45 workspace creation limit per hour

Is there any other limit that is worth knowing?
Is there any way something could go wrong? (RAM, number of users logged in at the same time, etc.)
I had a surprise during the first class when 15 students were left without a workspace because of the hourly limit. I totally understand the reasons of this limit but just want to make sure I don’t get stuck during a class!

Thanks for your help