Scholastic and the Bill & Melinda Gates Foundation on Friday released a new batch of data from Primary Sources: America’s Teachers on America’s Schools – what is believed to be the largest-ever survey of America’s public school teachers, completed last year.

The reports released yesterday drill down into data from 15 states, looking at the opinions of teachers on topics ranging from common standards to performence evaluations.

You can read all about it on the Gates Foundation blog.