Deadly Lessons (also known as Highschool Killer) is a 1983 American made-for-television horror film starring Donna Reed, Larry Wilcox, David Ackroyd, Diane Franklin, Ally Sheedy, and Nancy Cartwright.

She makes friends with Marita Armstrong, Calli and Shama, who is a Saudi princess and her roommate.

She enlists the help of the new attractive stable boy, Eddie Fox, who falls in love with her for 'not being like the other girls.'

Marita is kidnapped on the day she is set to leave by the school's janitor, Robert Hartigan.

It gave Kemper the idea to kill the other victims as a means of getting revenge on Miss Wade, who is revealed to be his mother, for abandoning him as a child.