As CBS reports:

Paul LaDuke, 75, has been charged with sexual exploitation of a child. LaDuke has been a math teacher at the school for 26 years.

Investigators determined that, while seated at a podium in class on Friday, LaDuke unzipped and lowered his pants and masturbated while students were present in the classroom.

“Through the course of our investigation, our detectives have come to believe that this has happened several times per year for 10 years or more, possibly,” Nebel said.

Asked if there had been previous complaints that did not result in any action against LaDuke, Nebel said no.

“It’s not that it’s been reported and nothing has been done, it’s just that during the course of the investigation, we’ve come to learn certain information and I can’t go further for the fact that there’s a possibility of more charges before a grand jury,” Nebel said.

You can visit the school website here.