The fire department and Bell's Ambulance arrived at the school three minutes after receiving a 911 call at 10:22 a.m., Adams said.
A high school coach was performing CPR on the boy, who was not breathing and had no pulse, Adams said.
Firefighters continued CPR and applied a defibrillator once to the boy's chest. The teen gasped and his breathing and pulse resumed a short time later, Adams said.
The boy was stabilized before he was taken to Healdsburg District Hospital. He was then transferred to Oakland's Children's Hospital by REACH helicopter, Adams said.
Adams attributed the successful life-saving effort to the coach, who he said recognized the medical emergency and immediately starting CPR, and the quick response by firefighters and emergency medical responders.