Cal. Education Code § 35179.8

(a) In order to better protect student athletes participating in athletics, no later than July 1, 2024, the California Interscholastic Federation, in consultation with the department, shall develop guidelines, procedures, and safety standards for the prevention and management of exertional heat illness. (b) Guidelines developed pursuant to this section shall identify the environmental conditions at which a school shall limit and prohibit practice and play. These guidelines shall include information regarding the accurate measurement of environmental heat stress at the site of the athletic activity, including the use of Wet Bulb Globe Temperature (WBGT) to determine ambient temperature, relative humidity, wind speed, and solar radiation from the sun, including sun angle and cloud cover. (c) Guidelines developed pursuant to this section shall identify the environmental conditions at which a school shall have a method to institute whole-body cooling to treat a student athlete with exertional heat illness, especially heat stroke, that is easily accessible at all practice and contest venues.