I think we do.
Our public schools are promoting the "ideal" of kids working in groups--on almost everything.
Students work on dozens of projects together (during and after school hours). A good grade gets shared by the whole group, even if one child does most of the work.
This blurring of personal responsibility for personal outcomes can easily lead to the student's thinking "Why should I work hard? What's yours is mine."
I have no kids, but I've heard of this. Reminds me of my senior project in college (grrrr!).