Years of research show that principals can significantly impact student achievement. Now, a major new study quantifies just how much difference an effective principal can make.
Replacing a below-average principal with someone in the above-average category—for example, a principal in the bottom 25th percentile on effectiveness with one in the 75th percentile or above—can add the equivalent of 2.9 more months of learning in math and 2.7 more months of learning in reading during a single school year, according to the report released by the Wallace Foundation.
The complete article is available on the Education Week website.