I just got a newsletter that mentions that AppGameKit is free for educational establishments.
That's for the original AppGameKit from which this project derives. I know you only utilize Python, so you might not be interested in that, but maybe you could drop The Game Creators a line and mention that you've found this Python project useful for Whizkids. Thanks.
(It looks like their education package includes some DLC of assets and plugins that you could use with this as well.)