Questions About websites to listen to music at school

what are some websites that let you play music in school?

Alright, I know someone is going to day 'You shouldn't listen to music in school, they're blocked for a reason' well I know they're blocked for a reason. But I can not work in class without music. I tried doing my work without music but my grades dropped dramatically. The problem is now my school has blocked every site. So the question is do you know any sites that your school hasn't blocked that play music? I tried Pandora.com, Iheart.com, grooveshark.com, playlist.com, spotify.com, youtify.com, jango.com,
http://answers.yahoo.com/question/?qid=20140324205155AAvoCyX