News and Events

9/27/12 - NBC Bay Area reports on the alarming rise of concussions in young athletes, "Head Games: How to Treat Concussions in Young Athletes"


9/17/12 - The San Jose Mercury News highlights AB 25 in its editorial, "Making football safer for youth"


Governor Jerry Brown Signs
AB 1451


AB 1451 passes the California State Senate


Learn about AB 1451, a new bill to train coaches about concussions


2/1/12 - The San Jose Mercury News/Contra Costa Times reports on AB 25 in the article, "California's concussion law puts teams on the spot"


Welcome to!

Mary with former 49er Eric Davis As the author of Assembly Bills 25 and 1451, I am pleased to offer this website as a resource for students, parents, coaches, and school administrators.

Kids believe they need to be tough and play through injuries, so they often return to the game too soon. When it comes to concussions, this kind of enthusiasm can be life-threatening.

Athletes who sustain a concussion are more likely to have a second or third incident, increasing the risk of brain swelling and bleeding, which can lead to coma or even death. Multiple concussions can result in a number of other health problems, including sleep disorders, memory loss, and depression.

AB 25 is California's new return-to-play law, and serves to promote the health and safety of high school athletes. Co-sponsored by the NFL and signed by Governor Jerry Brown in 2011, the bill took effect in January of this year. School districts are now required to immediately remove an athlete from a school-sponsored athletic activity if he or she is suspected of sustaining a concussion or head injury.

Students cannot return to play until he or she is evaluated by, and receives written clearance from, a licensed health care provider. A concussion and head injury information sheet must be signed and returned by that athlete and their parent or guardian before the first practice or competition.

To further strengthen this law, I authored another bill, AB 1451, which will train coaches to recognize the signs and symptoms of concussions. This training will help coaches and schools to take appropriate steps when an injury occurs. The Governor signed this bill on August 17, 2012.

I hope you find this website informative and helpful, as we work together to increase awareness about sports-related concussions and protect the health of our student athletes.

Mary Hayashi
California State Assemblymember, 18th District

To learn more about Assemblymember Hayashi, please visit