A Belmont Middle School technology teacher was arrested Saturday on two counts of possessing child sexual abuse material — after more than 18 years in the classroom and 13 years at a boys' summer camp, where every background check cleared him.
Leon Dyer, 45, was arrested by the Massachusetts State Police Cyber Crime Unit's Internet Crimes Against Children Task Force, alongside Belmont Police and Crime Scene Services. He is scheduled for arraignment Monday at Cambridge District Court. Police have not said what triggered the investigation.
The system that was supposed to screen this man gave him a clean bill every time. Belmont Public Schools Superintendent Jill Geiser confirmed in a letter to the community Sunday that Dyer had passed both Criminal Offender Record Information (CORI) checks and Statewide Automated Fingerprint Identification System (SAFIS) checks. Those are backward-looking databases — they flag people who've already been caught, not people who haven't been caught yet.
Geiser wrote that Dyer is now barred from school property and his technology accounts have been disabled. He was still listed in the Belmont Middle School staff directory over the weekend.
"We have no information at this time to suggest that this individual engaged in any inappropriate conduct with BPS students, on BPS property, or otherwise in connection with his employment with BPS," Geiser wrote.
That is the standard institutional response: isolate the bad actor, assure parents it was contained, move on. But Dyer didn't just work at a middle school. MassLive reported, citing his LinkedIn profile, that he also served as a camp counselor and administrator at Camp Avoda, a boys' summer camp in Middleborough, for more than 13 years. NBC10 Boston and the Boston Herald did not name the camp — NBC10 noted only that police declined to identify it.
Neither Belmont Public Schools nor Camp Avoda responded to MassLive's request for comment.
The framing gap across the three outlets is worth noting. The Herald buried the superintendent's admission about passed background checks deep in its report. NBC10 offered a hotline. MassLive was the only outlet to name the camp. None pressed the obvious accountability question: who hired and supervised this man for nearly two decades, and what exactly were they checking?
Police directed parents to the Middlesex Child Advocacy Center for resources. It was not immediately clear whether Dyer had retained an attorney.
The question isn't whether Leon Dyer is guilty — that is for the court. The question is how many others are sitting in classrooms and camp cabins right now, passing every check the system requires, while the system mistakes compliance for safety.
