CEDAR FALLS - A mold problem is causing River Hills School to temporarily close beginning today, a day after classes began.

River Hills is a school for students with moderate, severe, and profound developmental disabilities operated by Area Education Agency 267.

A message on the school's answering machine and Web site said the mold growth is due to the malfunction of a pneumatic controller in the cooling system. Classes are being suspended while commercial clean-up and air testing are conducted. School will resume when air tests have been completed, with missed days made up later.

River Hills is located at 2700 Grand Blvd.