Boarding school packing list?

i'm going to boarding school in a month! i don't know what to bring...we wear a uniform during school hours...and i'm not sure what else i need (like other then clothes i mean). People don't bring any furniture i don't think, and freshman aren't allowed to have laptops. other then that i need to know everything else to pack! oh and also i'll be doing lots of extra curricular stuff like different kinds of dance, sports (i'm thinking tennis, field hockey and rowing) and horse back riding...other stuff like that. THANKS!