9.0-11.0 psi - [Ref. "Football (ball)" - Wikipedia]
Football has a stadium which can fit 9 football pitches 9 full size
For under 14 Gaelic Football, you use a full size pitch and goals, with a size 4 football being used...
two full size football pitches
college football size vs. high school football size
A college size football is about the same as highschool size football Pro is a size up from college
In my league (Sierra Youth Football & Cheer): Mighty Mites: pee wee size football Jr Pee Wee: junior size football Pee Wee: junior size football Jr Midget: youth size football Midget: youth size football