Vandals armed with spray paint damaged the exterior of Jaindl Elementary School in Upper Macungie Township last weekend.
The school, which is part of Parkland School District, is located at 1051 Weilers Road in Lehigh County.
Upper Macungie police report the vandalism happened sometime between Friday and Monday.
Police report several markings were observed on exterior walls and on a generator.
Anyone with information about the incident is asked to call township police at 484-661-5911.