Good Venues For a Sweet 16 in MA?

Hi I'm Planning my sweet 16 which is going to be this September and I REALLY need help. Im looking for a good place to have my party. I want it to be nice but not too expensive. Im going to have about 100+ people attending. I want my party to be great. I was hoping for a place to have it in Boston. Does anyone have any Suggestions or nice places I could try to have it???