can the bus take him to school? i dont have a teenager, but not long ago was one.. kind of a pain in the a$$ too.
make him ride the bus
no more cable tv in his room
take all plates/silverware bowls away or lock them up, leave only paper plates/bowls/plastic cups and forks for him to use that he can just throw away..
take everything away from him, leave him a couple pair of walmart brand jeans and tshirts, a cot, tube socks and make him earn stuff back..... trust me it works, he wont want to wear that stuff for long.