The Albert Shanker Institute studied teacher diversity in nine important cities: Boston, Chicago, Cleveland, Los Angeles, New Orleans, New York, Philadelphia, San Francisco, and Washington, D.C.

What they learned was that the proportion of black teachers had declined, in some cities dramatically over the past decade.

All of these cities–to a greater or lesser degree–have been targets of corporate reform.

The black share of teachers’ positions declined by 1% in Boston’s charter sector, 24% in New Orleans, nearly 28% in Washington, D.C.

Is there a principle here? The more corporate reform, the fewer black teachers?