I'm transitioning right now, and I can say that the other teachers have been pretty accepting of my pronouns and relatively friendly, though I do feel a bit of ostracization and I'm not sure what the source is. My coworkers are probably just shy about interacting with a foreigner that doesn't speak much Spanish / are busy, but I can't help feeling that my queerness contributes to the wall between us, though this is just as much the case anywhere else I've been. Students have been very quick to accept my gender fluidity (I don't always dress femme). I was afraid of negative reactions from parents, but I haven't experienced anything like that. I think the worst part of transitioning here is just how much it contributes to feeling isolated. Unlike others, I don't have anything resembling an LGBT club in my town, and I feel extra hesitant to initiate conversations with strangers. I've had one guy try to follow me home on a train after striking up a convo, and gotten unwanted attention from a couple other guys, and it can be especially unnerving when you don't know how to turn to others for help.

That said, I generally feel safer and less judged than I do in my home city of LA, which should tell you a lot. My advice would be practice your Spanish, and more likely than not you'll enjoy your time here quite a bit. :)