The importance of good teachers is no secret. But what we know instinctively about good teachers still leaves some big questions. How do we define a good teacher? What characteristics should we look for? How much impact on student achievement can we expect? And how can we make sure all students receive the benefit of good teachers?

Key lessons from research. Key findings from research on teacher quality and student achievement, at a glance.

Lecciones Claves: La calidad de los maestros y el logro del estudiante.

Research review.  A synthesis of validated research on teacher quality and student achievement.

Research Q & A.  Things to consider as you move from research to practice.