This week: Louis speaks with Carl Cohn about his experiences during a 50-year career as a leader in California education. Cohn will retire next month as the first executive director of the California Collaborative for Educational Excellence, a small state agency with the vital role of guiding county offices and school districts on the state’s new system of school improvement.

Cohn reflects on his past roles as school superintendent and member of the State Board of Education and discusses other challenges facing California, especially the persistent academic achievement gaps among different student groups.