After analyzing a truly staggering amount of data, the researchers conclude that teacher effectiveness can be measured by using «value - added» analysis of student achievement growth on standardized tests. (b4njkids.org)
The second greatest school related impact on student achievement growth is school leader effectiveness. (insighteducationgroup.com)
We begin to address this issue by measuring principal effectiveness based only on comparisons of within - school differences in student achievement growth over time. (educationnext.org)