Will the school let me come back after christmas instead of....?

I'm back in school tomorrow for a short meeting with the head and dep. head then i'm back to lessons. I haven't been in for weeks and its like ive cut all my hair off and am a total emotional wreckage at the moment... do you reckon the head will allow me the rest of the term off school and for me to start back in january. I'm allowed to wear my hat as in the last meeting the head agreed to it. But boys will rip it off my head and ill be tormented for it. So what shall I say tomorrow in the meeting?