New York City's "school improvement industry" - the myriad external groups and organizations working to help schools meet specific goals - is so large, and often so fragmented, that it can be difficult to even measure.

Thomas Hatch, a Columbia University researcher and co-director of the National Center for Restructuring Education, Schools, and Teaching, recently set out to map those organizations working to support K-3 reading in New York schools, and understand how they operate, interact, and impact education.

Hatch sits down with CPRE senior researcher Ryan Fink to discuss his new research brief - "The Role of External Support Providers in Improving K-3 Reading Outcomes in New York" - and its potential implications for stakeholders across the country.