Some interesting data just came out of New York.

The state looked at teacher growth ratings across a variety of governance types and student demographics.

Below are graphs for Black and Hispanic students in Math and ELA.

The purple lines indicate highly effective teachers. Charters teachers who teach Black and Hispanic students are significantly more likely to be highly effective than teachers in others governance structures.

For ELA, the charter results are less dramatic, though Hispanic students seem to gain real benefit in teacher quality from attending charter schools.

Increasing the quality of teachers in our public schools is extremely important. This is especially true for those teachers that serve disadvantaged student populations.

New York has been a leader in increasing the rigor of teacher credentialing, which has led to an increase in the quality of teacher pipelines.

This data set appears to show another, or at least complimentary, route: expand the charter school sector.