During the filming of the scene when Torrance, Missy, Jan and Les carpool to a football game, a driver, angry that the film's motorcade was making him late for dinner, attempted to drive the camera truck off the road. It appears the character of Les is just an overly cautious driver who keeps checking his side mirrors. Huntley Ritter is really watching Mr. Road Rage get pulled over by the Highway Patrol.
The Toros gym scenes were filmed at Academy of Our Lady of Peace (OLP), a Catholic girls school in San Diego. OLP cheerleaders cheer for their school, as the Pilots, and for St. Augustine, a Catholic boys school. In the movie, real OLP cheerleaders appear at the regionals and nationals, in their Saints cheer uniforms. In the regionals, they are after the Broncos, praying. At the nationals, they are sitting next to the Clovers as the winners are announced.
During the first football game scene, the male cheerleaders behind Missy (Eliza Dushku) are not making the Torro "bull" hand signal like the rest of the cheer team. Instead, they are making "the shocker" hand signal.
The high school pictured in the movie is actually San Diego State University. A statue of the founder of the university can be seen in the shot at Missy's car before Torrance and Missy go to see the Clovers.
The Advanced Chemistry textbook that Torrance is studying is not a real book at all. The PHD writer is actually the Assistant Propmaster's name. Though not real, the book is credited at the end of the film as an actual book that was cleared for use.
Eliza Dushku and Clare Kramer (Missy and Courtney) were both on the T.V. series Buffy the Vampire Slayer at one point. Eliza was Faith, a second vampire slayer gone bad girl in season three. Clare was the goddess Glory who takes Buffy's sister to open a portal to hell. Nicole Bilderback (Whitney) also cameoed in a couple of episodes in season three as a Cordette.
In the scene where the Clovers are writing someone to ask for money for the competition, the woman they are writing to is named Pauletta Patterson. This is the same legal name of Gabrielle Union's character Mary Jane Paul on Being Mary Jane.
In this film Lindasy Sloane plays a bitchy head cheerleader who picks on the junior members of the team. In 'Sabrina the Teenage Witch' she played the junior member picked on by the bitchy head cheerleader.
When Missy hands in her form before auditioning for the team, the section for her name only has her first name on it, with no last name. Also, her address, written as "7762 Winnocks Neck Rd," could only be located in Scarborough, Maine. Missy said she's originally from Los Angeles, so either she moved from Maine very recently, and used her old address, or the movie made up an address to pretend it's where she moved to.
According to the National Federation Interscholastic Spirit Association, many of the stunts the teams perform in the national competition, including fly-overs, basket-tosses with head-over-heels rotation, and stunts more than two bodies high, are illegal at the high school level.