Versions of See prior versions of a law on LawServer 2024 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 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