First, it was West Virginia. Then, Kentucky and Oklahoma. Now, Arizona and Colorado teachers prepare to walk out.

First, it was West Virginia. Then, Kentucky and Oklahoma. Now, Arizona and Colorado teachers prepare to walk out.  Washington Post Teachers in Arizona and Colorado Plan to Walk Out for Funding and Pay Raises  New York Times Thousands of teachers in Arizona and Colorado to protest on Thursday  NBCNews.com The Arizona teacher walkouts are just a skirmish in the larger war on public education  Los Angeles TimesFull coverage