The Zackery Lystedt Law—signed by Washington Governor Christine Gregoire on May 14, 2009 and effective July 26, 2009—requires school districts and nonprofit organizations using school facilities to adopt policies for the management of concussion and head injury in youth sports.
More info:
http://www.discnw.org/youth/lystedt.html
coaches training:
http://www.wiaa.com/ConDocs/Con458/Concussion%20Management%20Training_Online.ppt