CIF concussion information and policies
For CIF information and policies about concussions, see this webpage. On this page is a link to the NFHS online concussion training.

Electrical storm safety
"When thunder is heard within 30 seconds of a visible lightning strike, or a cloud-to-ground lightning bolt is seen, the thunderstorm is close enough to strike your location with lightning. Suspend play for thirty minutes and take shelter immediately." See Appendix E of NFHS Soccer Rules for all details.
— NFHS Guidelines on Handling Practices and Contest During Lightning or Thunder Disturbances (2014-2015 NFHS Soccer Rules)