Jernigan's letter didn't specify how many students were involved, their ages or the date of the incident. '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.