Lawrence public school employees are considering whether to change school locks after a “master” key was stolen early this week in a burglary at a business in East Lawrence.

Someone broke into Advanced Glass and Mirror, 1705 Haskell Ave., between 5 p.m. Monday and 7:15 a.m. Tuesday and stole a laptop computer, power tools, and what a police report described as a “master key to all USD 497 schools.”

Bryan Hunter, district maintenance supervisor, said the district likely would decide today whether it was necessary to change locks at the schools where the key works.

Hunter said Wednesday that he didn’t know which schools the key was for, in part, because he didn’t learn of the theft until Wednesday. He said the employee who had given the key to the business was not at work Wednesday.

The business had the key because it had a contract to replace doors in the school.

He said there was no one master key that opens the doors to all schools in the district, and that the missing key could open as few as two or three schools. He said the key would open the exterior doors of schools, but not any interior doors.

“We’ll talk to the guy who gave him the key, find out exactly which key it was, and we’ll take appropriate steps,” he said.

Hunter said an alarm would sound if someone used one of the keys after hours when the school was empty.

“The chance of loss is not that great,” he said.