Some parents of students at a Jackson County elementary school aren't smiling after learning their kids were on a candid camera, even though it didn't work.

Valerie Shelters, principal of Northwest Elementary School in Blackman Township, says trash and written obscenities have been a chronic problem in the girls' bathroom. But she says she didn't know two staffers had mounted a dummy surveillance camera in a high corner on Monday.

Shelters says the staffers aimed the camera at the sinks and toilet stall doors in an effort to give girls the impression they were being filmed. But she had the camera removed the next day and the staffers were reprimanded.

Parent Amber Beaman tells Lansing-area television station WILX that the problem could be controlled if teachers monitored the bathrooms.