State law addresses concussions/return to play.
Florida Statutes 1006.20 Athletics in public K-12 schools.
(l) The FHSAA shall adopt bylaws or policies that require each student athlete who is suspected of sustaining a concussion or head injury in a practice or competition to be immediately removed from the activity. A student athlete who has been removed from an activity may not return to practice or competition until the student submits to the school a written medical clearance to return stating that the student athlete no longer exhibits signs, symptoms, or behaviors consistent with a concussion or other head injury. Medical clearance must be authorized by the appropriate health care practitioner trained in the diagnosis, evaluation, and management of concussions as defined by the Sports Medicine Advisory Committee of the Florida High School Athletic Association.