Basically it looks like enough to keep myself alive. I'll be sharing a house with two others but only buying stuff for myself. For instance going to the supermarket in a week I'd probably only spend $250 or something like that? Regarding transport I think I'll be within walking distance of work, and for example a bus to Mexico city costs $50. Sounds reasonable, no?
I would ask @ALC but I'm still laughing at an American mocking other countries' currency

(inb4 a Dane comes and schools me too...)
The school are also suggesting I go for 6 months on a tourist visa...pretty sure that's illegal to do any work (even volunteer or humanitarian work) on a tourist visa. Waiting for clarification on that but they already have lots of European staff so there must be a way around it.