'An investigation is underway with school administration, our safety manager and the Baltimore County Police Department,' the letter continued. 'I was recently made aware of a social media post of a video involving Woodlawn High School students engaged in highly inappropriate behavior while in class,' the letter said, according to WJZ-TV. The letter has only recently been reported by local media. Upon learning of the video, Principal Jamel Jernigan alerted parents in an October 8 letter. The incident occurred in a classroom within Woodlawn High School, a school in the Baltimore County town of Gwynn Oak. A social media video clip reportedly showing two students having sex in a Maryland high school classroom is under investigation by school officials and legal authorities.