There's this girl (+10 points!! )?

Dude your a senior in high school, your like 17 and shes a freshman like 14 or 15, come on man you got it, if its one thing girls like in high school is someone older than them and fun. Your young and older than her at least, so stop with the shyness and just go for it, your much older and girls like guys that take initiative and take control, dont be a wuss. Go for it and be cool about it, ask her out to the movies or to a dance. make your move and make it shine.