was it a guy or girl teacher?
if girl - tell the bitch to make you a sammich
if guy - hit him with an asp baton - they can be found here -
http://www.selfdefenseproducts.com/asp.htm (ever since my friends brother smacked me in the shin with one after i put toothpaste in his ear while he was sleeping ive feared them.)
and don him once, hit himn till he takes it back.