According to the ACLU's lawsuit against California (Doe v. State of California) at least 32 districts' schools required illegal student fees according to information posted on their website as of Aug. 27, 2010. The suit was filed in September 2010.
To check if your school was on their list, check out the complaint. Pages 13 through 17 include a list of schools as well as what the illegal fees included.
A good number of the 32 are from Southern California, including Beverly Hills High School, Malibu High School, Los Alamitos High School, Dana Hills High School, the California Academy for Math and Science (Long Beach Unified School District), and Arcadia High School.