What do I do when my girlfriend dumps me because her brother held it against her to ether dump me and stay at the same school or keep the relationship and be home schooled she still loves me and I do to what do I do

Her brother or her mother? I don't understand what you are saying.
How old is she and how old are you?

A quote I use a lot to answer questions is ''Opinions are changed as easy as feelings are.'' Change her brother's opinion although I think you meant to say mother like homegirl said

Well it depends on how old the girl friend is and how old he is. If this mother is wanting to take her out of school to keep her away from him, it's best to know the reason before telling him to change her opinion.