This is a historic moment. Teachers have walked out in West Virginia, Oklahoma, and Kentucky.

Today they walk out in Arizona and Colorado.

There will be more.

Huffington Post invited me to explain the reasons for this mass rebellion here.

I referred to the work of Bruce Baker and the Education Law Center about school funding, comparing the states. And I referred to the work of the Center for Budget and Policy Priorities about the failure of many states to fund schools since the recesssion of 2008.

The bottom line: do we care about our children, our future, our society?