You absolutley need to talk to the cops, or your school counselor. Those are the first steps to making this man right. If however, you do not want to move out for SPECIFIC reasons, grab a knife. If he comes to try and beat you, stab him. Several times if needs be. However, you should NEVER EVER EVER EVER EVER EVER do that first. You talk to the cops, or your school counselor. I see absolutley no reason why YOU have not taken action. If for somereason you want to take no action whatsoever
YOUR OPINION IS WRONG!
take a course of action, whatever that may be.