Hmmmm... while I'm not an attorney, it seems that those 47,000 kids might have a pretty good Class Action case vs. their local districts and the NEA/CTA! Gross Negligence. Maybe other grounds as well.
Interesting concept, but I doubt it. It's more likely that the teachers are backing the suits.
I've said on these threads before, the suit is meritless - there is no need to "prepare" for the exam. 12 years of education should be enough "preparation".