What do I need to do to be a starting halfback at my high school?

with your height you have to be elusive, it's a fact. you're never gonna be a power runner, so you'll have to rely on elusiveness and vision, more innate abilities than anything else which are difficult to gauge until you step out under the friday night lights. Also, to the guy who says you won't be a running back because you're 5'9", you clearly don't realize this is high school not college or the pros. Our two time all-conference running back was around 5'8" i would say. Hell, Barry Sanders was 5'8". Food for thought buddy.