Will the school let my mom do this do you think?

at school i have a Teacher adviser(TA)/homeroom. i love her shes so nice but i have no friends at all in the cl. i have to eat lunch alone cause all friend have different lunch times then me. i dealt with it but then today at lunch i 2 kids in my TA said you cut in line!(for lunch) they started yell cutter! cutter! (i really did even cut! i was just standing there!) one of them was like only my TA is in line right here so i got mad and just yelled I am in your TA at him! i went to the back of the line even though i did nothing wrong. i felt like crying. and then in general music the teacher is going to make us each sing in front of the whole cl (10 people) and she teaching us piano and i'm trying to understand but i just can't i don't get it and i don't want to ask for help for fear she will yell at me. (she the meanest teacher where i go). and because of a condition i don't want to talk about there is a 70% chance i have the disease depression. and this is a little personal but i think i'm also skipping my period cause i'm so stressed... i'm 13 and my mom wants to call the school to have them change my TA. going to a different school is not an option, it would only my the problem worse