Deputy Chief Ron Swanson transfers them to Jump Street, Dr. Spaceman moonlights as a high school drama instructor, and Erin Hannon became an AP Chemistry teacher after leaving Dunder Mifflin. Unfortunately they just missed the complete set of NBC Thursday Comedy cameos by not getting anyone from Community on board.
Many actors appeared on the TV series who became famous later, including Brad Pitt, Courtney Thorne-Smith, Peri Gilpin, Jason Priestley, Jada Pinkett-Smith, Bridget Fonda, and more.
Truth in Television: Whether or not it was deliberately inspired by the show, using young-looking police officers undercover as high school students has actually been done. Read about the real-life example of Alex Salinas here.