Lunch-period training sessions are scheduled for today and Tuesday at Terra Linda Middle School.
The sessions, sponsored by the San Mateo County Sheriff's Activities League, come in response to recent crimes on local school campuses that have alarmed community members, sheriff's spokeswoman Rebecca Rosenblatt said.
In September, a man walked onto three elementary and middle school campuses and harassed multiple students. In the third case, on Sept. 21, he abducted a 9-year-old girl from a bathroom at Parkside Elementary School in San Mateo and sexually assaulted her.
A San Francisco resident, Bradley Mrozek, was arrested as a suspect in those cases and is also accused in a separate incident at George Washington Elementary School in Daly City in March in which a man attempted to take pictures inside a girls' bathroom.
He has pleaded not guilty to molestation, kidnapping and other charges.
Eric Acha, an inspector with the district attorney's office and the owner of the Peninsula Self Defense Training Academy in Redwood City, is leading the training sessions.
Acha has 17 years of experience in law enforcement, and achieved a black belt in karate and a purple belt in Brazilian Jiu-Jitsu, Rosenblatt said. He will be teaching students the basic methods of self-defense in an abduction or kidnapping scenario.
The Sheriff's Activities League last week sponsored a similar training session at Central Middle School in San Carlos.