Instructions:

Good drill to do at your club in preparation for league matches.You can have 4 players per court, and if there are more than 4 of you use the next court if available.
Set up the court as illustrated in the diagram using markers to divide the court. 
The point is started with an underhand feed and play is conducted in the half of the court players are in. The doubles lines are in. 
Players need to work out tactically the best way to beat their opponent.
Play a round robin with all players challenging each other. You can play it that winners move one way and losers the other, if there are more than 4.

The coach(if there is one around) can adopt a “roving” position for this game with the students starting the point themselves.
This is very good chance to spend time with each student, encouraging each to put in 100% determination and effort no matter what the result.