Too young to have any job experiance, period, but if i go with what my siblings are saying, then i have a good idea of what kids are going to be good with. My two youngest sibs are grade 6 and under, they think the world of anyone as long as the teacher is nice. I find that my bro actaully gets along better with teachers despite the fact that they'r actually "female" when they have male chararistics. Its more comfortable for him. There usually too young to understand it fully anyways. And plus, short hair is IN for teachers nowadays, for all genders. Its middle school students that are harsher, and more uncomfortable with teachers. Most of the kids in my old class found it creepy to have a gay teacher, nevermind a trans. Unless they beleived u to be a guy, they'd probably see u as a lesbian which is equally uncomfortable to the majority of them. Not to say u dont look like a guy. U look male looking from what i can see in ur pic.
I say u should cut ur hair however u please though. Who gives a crap what they think? You'll only see most kids for a year or two anyways.
Maybe the middle school part is just from what i've seen...