Gym teacher is a perv i know how some girls on here are lying about these but this is really serious?

in my gym class i have a man teacher i dont wanna tell you his name but its mr.g i brougght tight pants to school and i had to do izzy dizzy (bendover) spin around and he called me and my friend up then i fell on my butt and he tryed to (dust me off) and on my way to the bathroom i saw him and i was ddone he was standing right there and poked me in my boob btw it really hurteed and saw what i wrote on my arm it said ix3 who and he said let me write my name.hhe said that if i tell any one theyy arent goona listenwhich makes me scared