Play Live: Opponent Choice - Narrow Field

Good Day,
I would like to see some flexibility for teachers to choose the scope of the opponents in Play Live. For example, a teacher might be able to choose from the following to narrow the field of opponents:
Play others in:
1. My Class
2. My School
3. My State
4. Anyone in Education City Play Live currently logged on.
 
Choices 1 and 2 would be very cool to set up some kind of competition within a school!  :-)
Thanks,
Charlie Gerancher
Technology Instructor
Steckel Elementary School
Whitehall, PA, USA