Oak Grove Police also learned from school officials that there was an investigation after they received an anonymous report that Grumke had furnished pornographic videos to female students.
She tried to back away from him after becoming uncomfortable with his conduct on social media and after receiving unwanted sexual content, she told police.
Grumke faces first-degree stalking, two counts of furnishing pornographic material or attempting to furnish to a minor, attempting to commit sexual contact with a student, and second-degree stalking.