Another important factor on the side of charter school advocates is the greatly diminished power of the teachers union, which had often been an obstacle in earlier reform efforts. (educationnext.org)
They do not introduce controls from tax returns to see whether the explanatory power of teacher value - added for later earnings, college attendance, and other factors, falls. (educationnext.org)
We believe in the collective power of teachers and leaders to achieve this vision. (glisi.org)