@James *******
thank you! Yes that was my understanding and I have seen some schools with great reputations I was considering. Perhaps I will just start with language ED for 9 months, then leave and see if I can come back with a visa to study at Chiang Mai University...I was also considering CMU as an option but as I wanted to improve my Thai anyways the language Visa just seemed to be a better fit!
I don't mind teaching English and have done it before, and I do have close Thai friends who run NGOs, but felt that personal education may be the best way to start.
Once I've figured out the best plan of action then I need to do a lot more research on what the visa implications are for my kid and how to get that sorted....that was going to be a separate question one day but if you have any insight I am all ears!!