State law addresses concussions/return to play.
This law requires all school entities to develop return to play policies for student athletes with consussions. It also requires training for coaches.
Purdon's Pennsylvania Statutes and Consolidated Statutes Title 24 P.S. Education § 5323. Concussions and traumatic brain injuries
(c) Removal from play.--A student who, as determined by a game official, coach from the student's team, certified athletic trainer, licensed physician, licensed physical therapist or other official designated by the student's school entity, exhibits signs or symptoms of a concussion or traumatic brain injury while participating in an athletic activity shall be removed by the coach from participation at that time.
(d) Return to play.--The coach shall not return a student to participation until the student is evaluated and cleared for return to participation in writing by an appropriate medical professional. The governing body of a school entity may designate a specific person or persons, who must be appropriate medical professionals, to provide written clearance for return to participation. In order to help determine whether a student is ready to return to participation, an appropriate medical professional may consult any other licensed or certified medical professionals.