CALUMET TOWNSHIP — Administrators closed Longfellow New Tech Elementary School on Tuesday after a transformer malfunction in one classroom filled the building with light smoke.
Students were sent home as a precautionary measure, district Superintendent Sharon Johnson-Shirley said.
The district's maintenance staff and the Lake Ridge Fire Department were on scene investigating, she said. Maintenance staff previously had been working on the transformer.
The school will resume normal operations Wednesday, she said.