Thieves broke into John Long Middle School late Sunday and stole more than 50 videocameras, laptops and desktop computers.
The thieves, who remain unidentified, burglarized five rooms in two different buildings, said Pasco County Sheriff's Office spokeswoman Melanie Snow.
"They entered the building at an entry point not visible from the street," she said.
There have been a number of burglaries of Pasco schools recently — 13 since October. Chasco Elementary, Calusa Elementary, Chasco Middle and Ridgewood High have all been hit, some of them a couple of times.
Assistant superintendent Ray Gadd said the burglaries are "frustrating."
"It's just insane, especially when they rob them over and over," Gadd said. "The irony is you put cameras up and they put on masks."
Gadd said he's working closely with deputies on the issue.
"A lot of schools are very vulnerable," he said. "But it is something we're looking at. I have a meeting next week with some security folks."
Deputies have arrested four men in connection with what they're calling the "Apple Burglary Ring" of stolen computer equipment from other Pasco schools. Despite the similarities, detectives have not determined whether the Long Middle break-in is linked to other burglaries.
"We're investigating," Snow said, "it's too soon to say if it's connected to the others."