2023 Massachusetts General Laws ch. 111 sec. 222 – Interscholastic athletic head injury safety training program; written authorization required for participation in extracurricular athletic activity following unconsciousness or diagnosis of concussion; mainten

2022 Massachusetts General Laws ch. 111 sec. 222 – Interscholastic athletic head injury safety training program; written authorization required for participation in extracurricular athletic activity following unconsciousness or diagnosis of concussion; mainten

2020 Massachusetts General Laws ch. 111 sec. 222 – Interscholastic athletic head injury safety training program; written authorization required for participation in extracurricular athletic activity following unconsciousness or diagnosis of concussion; mainten

2019 Massachusetts General Laws ch. 111 sec. 222 – Interscholastic athletic head injury safety training program; written authorization required for participation in extracurricular athletic activity following unconsciousness or diagnosis of concussion; mainten

2017 Massachusetts General Laws ch. 111 sec. 222 – Interscholastic athletic head injury safety training program; written authorization required for participation in extracurricular athletic activity following unconsciousness or diagnosis of concussion; mainten

2016 Massachusetts General Laws ch. 111 sec. 222 – Interscholastic athletic head injury safety training program; written authorization required for participation in extracurricular athletic activity following unconsciousness or diagnosis of concussion; mainten

2015 Massachusetts General Laws ch. 111 sec. 222 – Interscholastic athletic head injury safety training program; written authorization required for participation in extracurricular athletic activity following unconsciousness or diagnosis of concussion; mainten

2014 Massachusetts General Laws ch. 111 sec. 222 – Interscholastic athletic head injury safety training program; written authorization required for participation in extracurricular athletic activity following unconsciousness or diagnosis of concussion; mainten

2013 Massachusetts General Laws ch. 111 sec. 222 – Interscholastic athletic head injury safety training program; written authorization required for participation in extracurricular athletic activity following unconsciousness or diagnosis of concussion; mainten