Welner, K. (2013, June 10).
The bottom line on student tracking. The Answer Sheet Blog, by Valerie Strauss.
The Washington Post. http://www.washingtonpost.com/blogs/answer-sheet/
SIG member and well-known policy scholar Kevin Welner responds to three misinformed claims made by a recent New York Times article about the rise of ability grouping. Also available as a pdf.