My brother is being refused admission to a school that I attended for 9 years. This is because when I was in school, the teachers traumatised me and we complained about it in a feedback form. The principal of the school called me to her office and gave me a earful for "not being grateful" to the school for all the opportunities they gave me.
This year, my brother applied to the school (because they have good facilities and provide the subjects that he wants). But the principal refused to give him a place in the school because of how "disrespectful" I was even though he has the marks to get in. Is this legal and if not what can I do against it?