Teacher films sex tape with male student inside classroom

A Louisiana teacher is accused of filming a sex tape with one of her male students inside the classroom while other students were attending the school's pep rally. 

Constance Robertson, a 25-year-old substitute teacher at Port Barre High School in Louisiana, had sex with a teenage boy in her classroom and they filmed it. 

The video of the incident was discovered by school administrators, after the 16-year-old student, who recorded the incident on his mobile phone shared it with other students.

The school authorities called the police and after they arrived and looked at the contents of the boy's phone, they found evidence that led to the teacher's arrest. She was then charged with felony carnal knowledge of a juvenile.

Robertson told police she thought the student was 18 at the time she agreed to meet with him in her classroom during the pep rally, Port Barre Police Chief Deon Boudreaux said.

St. Landry Parish Schools officials learned of the allegations Thursday and have since relieved Robertson of her duties as a substitute. More evidence was later recovered on her phone but police did not elaborate on what was found.