For high school sports, the bottom bar on a field goal post is 10 feet high. The width of the goal post is 23.33 feet. This width dimension is different than those used in professional and college football.
For either college or professional football, the bottom bar is also 10 feet high, but the width dimension of the field goal is narrower, at 18.5 feet. Although all the other dimensions for high school football fields are the same as for college and professional football sports, the only other exception are the hash mark dimensions. For high school football fields, the hash mark width dimensions are 53.33 feet, which is much wider than for college and professional field dimensions at 40 feet and 18.5 feet, respectively.