Here is a link to the text of the ruling. Just click on the Fields vs Palmdale link.
http://www.ca9.uscourts.gov/ca9/newopinions.nsf/Opinions+by+date?OpenView&Start=1&Count=100&Expand=1.1
Section I is quite interesting as it describes the events leading up to the complaints and lawsuit. It is also interesting to note that a consent letter was sent out to parents where parents could refuse to let their children take part in the survey.
There can be some debate whether the consent letter was informative enough for parents to make an informed decision. The consent letter does state that the goal of the survey is to determine a baseline for a child's exposure to trauma and lists 'violence' as an example. The form did not explicitly mention that sex related question may be asked.
The consent form also points out the question may make the child feel uncomfortable and the child would be referred to a counselor if that occurred.