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Half Moon Bay Coach Arrested Over 2008 Assault Claims Involving Former Student

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Published on August 15, 2026
Half Moon Bay Coach Arrested Over 2008 Assault Claims Involving Former StudentSource: San Mateo County Sheriff’s Office

San Mateo County Sheriff's detectives arrested 61-year-old Paul A. Farnsworth at his Half Moon Bay home on Thursday on suspicion of child sex crimes tied to his years working as an El Granada Elementary School teacher and Half Moon Bay High School cross country and track coach. Detectives had obtained an arrest warrant before taking him into custody, and he was booked into the Maguire Correctional Facility in Redwood City.

Farnsworth is suspected of violating California Penal Code 288(c)(1), covering lewd or lascivious acts with a child aged 14 or 15, and Penal Code 289(a)(1)(A), sexual penetration by force, violence, duress, menace, or fear, according to Coastside Buzz. KTVU also reported on the arrest, which stems from an investigation that began earlier in August.

The case centers on a former student who came forward for the first time this month. According to the San Mateo County Sheriff's Office, the victim reported that Farnsworth sexually assaulted her in 2008 while he was her coach, and that a sexual relationship began about a year later when she was 16 years old, as reported by SFGATE. The Sheriff's Office has connected the victim with community support resources, per the same account.

District Moved Quickly After Notification

Cabrillo Unified School District Superintendent Dr. Ramon Miramontes said the district was notified of the investigation on Wednesday and immediately placed Farnsworth on administrative leave, according to Local News Matters. The district, which oversees both El Granada Elementary School and Half Moon Bay High School, is also providing counseling support for students and families affected by the news.

Detectives are now asking anyone who believes they were victimized by Farnsworth, or who has relevant information, to contact Detective Pitts at 650-363-4060 or to call an anonymous tip line at 1-800-547-2700, per Pacifica Patch. The nature of the allegations, spanning Farnsworth's dual roles across two campuses over many years, has led detectives to indicate there could be unidentified victims.

What the Charges Carry Under State Law

The two statutes cited in Farnsworth's arrest carry very different consequences. Penal Code 289(a)(1)(A), the sexual penetration charge, is a mandatory felony under California law, carrying state prison terms of three, six, or eight years with no option for probation, and it counts as a strike under California's Three Strikes law, according to Sex Crimes Defense Lawyer. Penal Code 288(c)(1), by contrast, is a wobbler offense that prosecutors can charge as either a felony or a misdemeanor, applying to lewd conduct with a 14- or 15-year-old when the perpetrator is at least 10 years older, per My Rights Law.

The 18-year gap between the alleged 2008 assault and this month's arrest is not a legal obstacle. California Penal Code Section 801.1 allows prosecutors to file felony charges for specified sex offenses against minors at any time before the victim turns 40, according to Shouse Law Group, reflecting reforms passed under Senate Bill 813 that extended reporting windows for child sexual abuse survivors.

Civil Claims Remain a Possibility

Beyond the criminal case, California Code of Civil Procedure Section 340.1 gives survivors of childhood sexual abuse the ability to file civil lawsuits until age 40, or within five years of discovering psychological injury connected to the abuse, according to DeMarco Law Firm. Those expanded civil filing deadlines came through Assembly Bills 218 and 2777. Whether any civil claims will be filed against Farnsworth or the district remains unknown.

The San Mateo County Sheriff's Office is the primary law enforcement agency for Half Moon Bay and manages custodial bookings at the Maguire Correctional Facility. Formal court arraignment details and bail proceedings have not yet been reported, and it remains unclear whether additional victims will come forward following the detectives' public appeal.