Parents are getting more and more involved (read: obsessive) about their childrens' education, sometimes to the detriment of the school process. Very often they'll blame teachers when their kids don't do well in class (not necessarily incorrect). My mother works in the inner city - parents there tend to be ambivalent about their childrens' progress unless they are relatively affluent, from what I've seen.
On the other hand, my father works in a suburban private school, and the parents there push back much more often, especially when they aren't right.
I can't say whether or not it's good or bad, but the climate of education in America has shifted from one of parents surrendering their kids and trusting the teachers to one of parents questioning the teachers when kids don't do well. Very curious.