AITAH for making my teacher cry?

i go to an art school and we were working with clay, my classmate threw a piece of it in the air and i felt it landing on my head, i asked him if it was actually there but when he proposed to get it out a thought he was trying to put more on my head so i just stepped back and asked the teacher if there was a mirror, she told me to go to the bathroom and she already seemed irritated, i explained to her that our bathroom don't have mirrors but she kept insisting and screaming at me, also adding that it was unacceptable to have clay on the face, after she said that my classmate gave me a mirror and the clay she was talking about was a bit of dust on the point of my nose, also in the mirror i saw that i didnt have clay in my hair and said it out loud to make the teacher understand that i was ok and did not need to go to the bathroom, but for some reason she kept insisting, of course i kept telling her that i was fine but she got closer and hit me with her shoulder just to then go next to the door and tell me to leave the classroom because apparently i needed to "settle down", i left and went to the bathroom to get that dust off my nose, while i was walking back to the class i stopped a second right outside of the door to explain my classmate what just happened, the teacher then came out so i politely asked her to go to the headmaster, she insisted on knowing why, so i told her that it wasn't normal for a teacher to hit a student and that i needed to tell someone, she said no and went back to the classroom, after a while she came back and started apologising and added that i should've apologised too, i refused because i did nothing wrong and we kept going for 5 minutes and then she gave up and went back to class, when i went back too she was on her desk crying and when a "special" student asked her why she was crying she just started screaming at her saying that we are not the only ones allowed to feel sad. lol