How should i were my hair at school?

Ok, im really tying to loose weight and look really good for school next year. like i want to make everyone be like "wow"! My school has a dress code of a solid color polo but it can be any color. I think i can do good with the cloths i were but my hair during school always gets messed up! I have naturally really curly hair (like alica keys) but i love to straighten it. This year i have athletics 8th period. Can u tell me how i should were my hair to school? and everything i should do to make people be like "wow"??? thanks (: