Prom Night 3: The Last Kiss Edit
Ms.Richards is the guidance counselor in Prom NIght 3: The Last Kiss.
She is seen at the start of the movie telling Alex his grades aren't where they should be telling him he should find a career in services instead of Medical School. Later on in the Movie, when she discovers Alex's grades have gone up, she assumes he hacked the system. She goes to confront Alex about his bumped grades but unfortunately for her Mary Lou stops her, Mary Lou then takes Ms.Richards inside a Home Ec. Class.
Mary Lou then forces Ms.Richards into a salon chair and then drenches her in battery acid, killing her.