News24.com, an Australian publication, reported on Friday that students in the Knox county Schools were taught about sex during the school bus trip from Knox to Milledgeville, Tennessee, and that it was a “common occurrence” to find students naked in the school parking lot.

News24.org reported that the incident occurred during the 2015-2016 school year.

A spokesman for the Knox County Schools told News24 that students and staff were not aware of any other similar incidents on the school campus.