Community School District #2, in New York City, has been engaged in a long-term process of system-wide instructional improvement, now in its eleventh year. This process involves, among other things, heavy investments in professional development for teachers and principals that are focused on...

The context for this paper is a general concern among educational reformers and students of educational reform about the role of local school districts in the improvement of teaching and learning in schools.

Community School District #2, in New York City, has been engaged in a long-term process of system-wide instructional improvement, now in its eleventh year. This process involves, among other things, heavy investments in professional development for teachers and principals that are focused on...

The context for this paper is a general concern among educational reformers and students of educational reform about the role of local school districts in the improvement of teaching and learning in schools.