(Meta) game design to facilitate educational game design workshop/class
I think you could provide a set structure for the game mechanism while keeping the actual content of the game to be defined by teacher and students.

This allows less skilled people to join in while these boundaries (you may call them guiding principles) to provide guidance and inspiration.

Example: think of a customised happy families (kwartet in Dutch) as one of the easiest examples. The content could be the actual course material.