ah
Hmmmm i think you need to rattle those cages harder.
Keep talking to the school counsellor, any trusted teachers, relatives? Friends parents?
its not about making your mum the bad guy, but if your rages really are out of controll, then you need some sort of help. What about childrens services in your area?
I dont know what country you are from but do you live somewhere where they have a kids helpline number ?