High school football size vs. NFL football size?
college football size vs. high school football size
Why does the size of a high school football field look smaller than that of a college or NFL football field?
Players who wind up in the NFL have usually played football since they were young children. They play in pee wee leagues, junior leagues, junior high school, high school, and college. Many current players and former players run football camps, usually during the summer, where young men can go to learn more about playing football.