Math teacher Gary Rubenstein dismantles KIPP claims that they boost low-performing student test scores more than public school student scores. Turns out the NYC "value-added" data dump has uses after all.
Analyzing Released NYC Value-Added Data Part 3 | Gary Rubinstein's Blog
"…charters do not serve the high needs low performing students that they claim to. Also notice that since these red and yellow markers are not floating above the cluster of points but right in the middle of all the other points, this means that they do not ‘move’ their students any more than the …