It can happen to the ref too!
Here you will find .pdf files of some documents you may find useful. Feel free to print them as needed.
You will find a few videos embedded here regarding Concussions and Concussion protocol. Some will apply to our officials, some will not. These are intended to educate us on the changing world of athletics in regard to head injuries.
The videos embedded here that have "CFOA" included in them are sanctioned from the CIF State Rules interpreter and the CFOA Instructional Program. Use these to supplement your studying. (2021 Films will be updated soon.)