What position should i play for my school soccer team?

WOW! I KNOW THE BEST POSITION YOU CAN PLAY! You should play a left( or right) side defender, it's the postion such as dani alves(barcelona defender), carlos salcido(fulham defender), Sergio Ramos(real madrid defender), maicon(inter milan defender), etc play in. In this position not only do you defend but can move up more than midfielders as well, u can help cross,u can help a player out like lionel messi when he needs someone to pass to, trust me man, this positon is perfect for you, based on what you said though. This position is usually for fast defenders, you should check out videos of dani alves on you tube,he might give you good plays to help you out, hes a fast defence player. best of luck for you