A recent study finds that the most-effective principals can raise students' achievement in one year by as much as two to seven months of learning, while the least-effective principals can lower achievement in similar amounts. The findings, included in the School Leaders Matter study, is based on a look at 7,000 principals in Texas. The study also found that principal turnover is higher at disadvantaged schools -- a potential setback because it takes time for principals to begin to see changes in student achievement.

Related Summaries