Do I masturbate too much for a girl??

I think you have a really healthy and strong sex drive / libido . I don't know about masturbating in school just to concentrate . I would say as long as its not negatively impacting your life and goals , go for it . I believe it's because you seem to want and enjoy sex more than most young women and probably the lack of sexual intimacy with another is really ramping up your cravings for climax . If you can find a partner , do so and just make sure you use protection and be safe , other than this .... fuck away , it's not going to hurt you ( I hope ) :)