Most high school leagues have their own rule book, but basically they follow MLB rules. They may modify their rules for things such as innings allowed to pitch, innings per game, size of field, and so on. But the basic pitching rules should pretty much be the same. Did you have something specific in mind?
Hernando High School - Florida - was created in 1889.
Gainesville High School - Florida - was created in 1906.
The motto of Hawthorne High School - Florida - is 'None'.
Ridgewood High School - Florida - was created in 1978.
Hastings High School - Florida - was created in 1924.
Gulf High School - Florida - was created in 1922.
Ridgeview High School - Florida - was created in 1998.
Rutherford High School - Florida - was created in 1961.
Pace High School - Florida - was created in 1972.
The motto of Gainesville High School - Florida - is 'Go 'Canes!'.
yea she went to Florida A&M University