I second what @marsha-kay-ottum-owen said about more writing classes (and an author-illustrator one would be fantastic!).
Also - this is in comparison to other online children's book courses, not traditional art school. But something others are doing really well and would be a H-U-G-E feature if you offered it was to give class participants direct submission opportunities where they skip the slush pile (to select art directors you've networked with and got on board with it, or editors and agents). You'd probably want to limit these opportunities to only those in the LIVE classes though, especially since there would be a time limit in order to submit to those industry professionals.
Speaking of networking with industry professionals - what about classes that are actually taught by an art director, an editor, and an agent?