Versions of Ohio Code 3707.521 - Rules regarding assessment of athletes sustaining concussions or head injuries on LawServer 2023 Ohio Code 3707.521 – Rules regarding assessment of athletes sustaining concussions or head injuries 2020 Ohio Code 3707.521 – Rules regarding assessment of athletes sustaining concussions or head injuries 2018 Ohio Code 3707.521 – Rules regarding assessment of athletes sustaining concussions or head injuries 2016 Ohio Code 3707.521 – Rules regarding assessment of athletes sustaining concussions or head injuries 2015 Ohio Code 3707.521 – Guidelines for athletes sustaining concussions or head injuries 2014 Ohio Code 3707.521 – Guidelines for athletes sustaining concussions or head injuries