Shaving Advice!!

Jordan
I'm 15 and weekly shave up to my knees, never all the way up. But over the past few months I've become super self cautious of the really long hair on my thighs. My mom always advised me to only shave up to my knee, but my thighs are really hairy and I wear shorts to school a lot. It also doesn't help that I'm in a few sports that require short spandex. I really want to shave up my whole legs becuase up would feel much better when I wear shorts. If you're my age what do you do? How far up do you go? Or if you're older what did you do when you were a teenager?