State law addresses concussions/return to play.
New Hampshire Revised Statutes Annotated 200:49 Head Injury Policies for Student Sports
Education is the key to identification and appropriate management of all concussions. The school board of each school district shall develop guidelines and other pertinent information and forms for student sports to inform and educate coaches, student-athletes, and student-athletes' parents or guardians of the nature and risk of concussion and head injury including continuing to play after concussion or head injury. On an annual basis, a school district or school shall distribute a concussion and head injury information sheet to all student-athletes. The Brain Injury Association of New Hampshire is available to educate and assist the public with implementing and/or updating concussion management protocols.
New Hampshire Revised Statutes Annotated 200:50 Removal of Student Athlete
I. A school employee coach, official, licensed athletic trainer, or health care provider who suspects that a student-athletehas sustained a concussion or head injury in a practice or game shall remove the student-athlete from play immediately.
II. A student-athlete who has been removed from play shall not return to play on the same day or until he or she is evaluated by a health care provider and receives medical clearance and written authorization from that health care provider to return to play. The student-athlete shall also present written permission from a parent or guardian to return to play.
III. No person who authorizes a student-athlete to return to play shall be liable for civil damages resulting from any act or omission in the rendering of such care, other than acts or omissions constituting gross negligence or willful or want on misconduct.