Heterogeneous grouping .. NY Times .. Connecticut

http://www.nytimes.com/2009/06/15/education/15stamford.html?_r=1

....which is among the last bastions of rigid educational tracking more than a decade after most school districts abandoned the practice.

So in an unusual experiment, Cloonan mixed up its sixth-grade science and social studies classes last month, combining zeros and ones with twos. These mixed-ability classes have reported fewer behavior problems and better grades for struggling students, but have also drawn complaints of boredom from some high-performing students who say they are not learning as much.