English teacher Paul Bellisario was declared the winner of Maine South High School's teacher dance-off May 2. | Tamara Bell~Sun Times Media

Demonstrating moves he learned from the Internet, Maine South science teacher Dave Fermanich, center, dances before students during the May 2 spring assembly, which capped off "Month of Mayhem," an all-school fundraiser. | Tamara Bell~Sun Times

Maine South High School students cheer during a spring assembly where six teachers danced as an incentive for the school to raise money for cystic-fibrosis research and support. | Tamara Bell~Sun Times Media

The Advanced Dance class at Maine South High School performs a routine to M.I.A's "Hustle" during the May 2 spring assembly. | Tamara Bell~Sun Times Media

Maine South students Diandre Strickland and Haley Miller battle it out against two other student couples in a dance contest held during the May 2 spring assembly at the Park Ridge High School. | Tamara Bell~Sun Times Media