Change of clothes different than worn to school for academic classes.
Change of shirt, short, shoes.  
Proper footwear is pertinent as we always run in some way for 
training purposes.  A shoe designed for style more than function is 
not appropriate.  A shoe with proper arch and ankle support is 
best.  Recommended types for outdoor/indoor work- running shoe, 
trail running shoe, cross trainers. Recommended types for indoor 
work - basketball or cross trainer.  Chuck -Ts, DC's, Vans and the 
like are never a good choice.  Invest in a good pair of the above 
recommended shoe, keep them in your bag, and you'll be set.

Water bottle.

All students must have a folder to keep materials in.