In high school there is a formula. When you're that new to running anything will work. There are those with talent and those without talent. The only way for those without talent to compete with those with the talent is through consistant hard training. This includes, but is not limited to, high mileage. Whether high mileage for the young runner is 80, 90 or 100 miles is dependant on how much the runner can physically handle. No one is saying a young runner should run 100 miles every single week, but getting close during the off-season isn't a bad idea. I was short and chubby my freshman year in high school, no talent whatsoever, but managed to become All-State in high school in both track and XC by putting in long quality miles during the off-season up to 90+ before my senior year and wasn't injured at all in high school. Don't knock it unless you've tried it.