It was on the set of this film that Harry Jay Knowles first got wind of Peter Jackson making The Lord of the Rings into a movie. He urged Elijah Wood to go for it even though the actor had never read the book. Which Wood duly did, ignoring the news that Jackson was largely casting British actors and videotaped his own audition.
A lot of the filming was done at the high school in Lockhart, Texas. The football team was used and the city was told to show up for the football game and were given fake t-shirts to wear in the stands. (Since torn down - new school built.)
During a retrospective interview for Halloween H20, Josh Hartnett acknowledged his controversial hair style that can be seen in that film and The Faculty. Both productions hated it. But Hartnett intentionally kept cutting his own hair and messing it up to look more like an authentic teen. These antics led to fights with producers and the director of H20 who wanted him fired. Ultimately that did not occur and Hartnett finished both films.
Tina Rodriguez: (at around 10 mins) the tattooed girl whom Marybeth asks where the office is, is director Robert Rodriguez' sister.
Harry Jay Knowles: (at around 12 mins) the bespectacled, red-haired teacher having his injury examined by Nurse Harper (Salma Hayek). Knowles, most famous for his movie news website "Ain't it Cool News," is a long time friend of Robert Rodriguez and a fellow resident of Austin, Texas, where this movie was filmed.