So today at school, I was walking past the office to see my brother in there, I turn around and walked in to see what happened, keep in mind my brother is a dark skinned male. I found out he was punched in the face twice for not giving a girl chips. He in defence pushed her away to stop her from hitting him again, with teachers watching btw.

He gets called into the office and gets suspended, the girl gets off with a simple verbal warning. She lied her arse off to get away with it. My brother took all the heat and is getting blamed for everything. I heard the girls giggling about it, and I was going to slap her, she told the vice principle that my brother had choked her, punched her back and pulled her hair. He apparently hit her so hard "period blood came gushing out". What should I do to get the girl in trouble, the punishment she deserves? I live in Sydney Australia and need help. BTW my school is hardcore feminist