I hate being at ESL class!! At the normal class their are many great friends and many nice girls, but I in class, I am always at ESL class, all the students are male, no girls, few studetns, not my best friends. I hate it. What I need to do is develop English skills, but how can I prove that I developed my English knowledge, and how can I developed my english? should I read books a lot?

Reading is a great way to improve your knowledge of English. But the best way is to talk to your American friends whose native language is English. I've known a lot of exchange students who got great at English really fast because they socialized a ton. The ones who were shy and didn't talk a lot to their friends (and to everyone even) never became very good at English. So, even though you don't have ESL class with your friends, talk to them on the weekends and outside of class. Make new friends as well. And speak in English as much as possible.
The way to prove your fluency is to take the TOEFL (Test Of English as a Foreign Language). So once you start to become fluent, start prepping for the test.

School is to work on Job skills, not to hunt down girls.

Reading books out loud could help.
Actually, reading in general would help.
Either classic novels or straight out of the English text book in school.
Work on your spelling and sentence structure.
Hopefully that'll get you out of their.