In contrast, a meta - analysis of 35 years of research indicates that school leadership has
a substantial effect on student achievement and provides guidance for experienced and aspiring principals alike.»
He is entirely correct in observing the strong evidence showing that family income, parental education, family composition, housing stability, and other social factors have
a substantial effect on student achievement.
Not exact matches
After controlling for
student and peer attributes and for selection bias, we still find a
substantial positive and statistically significant
effect of attending a network school
on student achievement.
The estimated
effects of the private school share
on student achievement are somewhat smaller in science and reading than in math, but they remain
substantial, positive, and statistically significant (see Figure 2).
Although, as the authors note, «most non-urban
students do reasonably well in any case,» the causal
effect of a year of non-urban charter attendance is a
substantial reduction in
achievement in all levels and subjects,
on the order of 0.16 standard deviations in middle school with almost a quarter of a standard deviation decline in high school math.