More than 160 students at a Stamford middle school had to switch classrooms Tuesday due to some mold concerns in the building.

Administrators say rain seeped through the Rippowam Middle School?s half-completed roof in August. School officials say several teachers began complaining about the air quality in the building after the leak. When two teachers became ill, school officials tested the air quality. According to the school?s principal, the first test came back fine. However, after more complaints, administrators did another round of tests.

The school principal says he was notified Monday that eight rooms had some concerns, but he doesn?t know what those concerns are. School officials closed the rooms and cleaning crews will clean them Tuesday evening. All of the classrooms should be open Wednesday morning.