As used in this chapter, the following words and phrases have the meanings as defined in this section unless the context clearly indicates otherwise:
"Health care provider" means a licensed physician or a licensed nurse practitioner, licensed physician assistant or licensed health care professional working within the person's scope of practice and under the direct supervision or written consultation of a physician. All health care providers referred to in this chapter also must be trained in the evaluation and management of concussions.
"School athletic event" means activities sanctioned by the Mississippi High School Activities Association (MHSAA) or the Mississippi Association of Independent Schools (MAIS), and school-sponsored activities in Grades 7 through 12 of schools that are not members of the MHSAA or the MAIS which activities are organized and conducted in a manner substantially similar to activities that are sanctioned by the MHSAA or the MAIS.