It says

Quote
the complaint offers a devastating analysis of the two-and-a-half-hour multiple-choice test, which, among other flaws, fails to reflect the curriculum taught at many middle schools. The test also heavily favors those who can afford extensive tutoring and has not been shown to be a good predictor of student performance in high school.

If such a complaint is well-founded, then sueing doesn't seem an unreasonable response. Have you looked at this "devastating analysis"?

Email: my username, followed by 2, at google's mail