The principal at Mount Hebron High School said he?s received no reports of rats entering the building this year, but the school system confirmed evidence of a female rat and some babies in the courtyard.

Teachers, whose identifies are not being revealed by The Examiner , said six rats fell from the ceiling onto a cafeteria table on Wednesday. School system officials sent an e-mail to parents on Friday denying the incident and said a joint Howard County Health Department and school system inspection found no traces of rats anywhere in the building.