The original ending for the film was at Toby's funeral. He was the only one that was killed during the ending shootout. The scene was scripted but was never shot.
The original writer, Jessica Kaplan, died at age 24 in a small plane crash over Los Angeles' Fairfax district (6 June 2003), just before filming started. The plane was piloted by her uncle. The film is dedicated to her.
When the girls go back to East LA and see the man receiving oral sex on the sidewalk, the mirror in the shot is clearly not the correct mirror for the SUV they are riding in.
When Allison is talking to her dad at work, he has a water bottle in his hands when the camera is on him the lid is on, but when it turns to Allison the lid is off. It does this for a couple times.
What are the differences between the R-Rated version and the Unrated version?
A
The Unrated version of this social drama features seven minutes of new footage, mostly story extensions that don't offer any new information. Some nudity has been added as well. A detailed comparison between both versions with pictures can be found here.