Almost a year to the day after West Virginia teachers went on strike that launched a national movement, they're doing it again.

Nearly all of West Virginia's 55 counties have called off public school classes Tuesday as teachers protest education legislation that their unions view as lacking their input and as retaliation for last year's nine-day strike. That walkout launched the national movement that included strikes in Kentucky, Oklahoma, Arizona, Washington state, and more recently, Los Angeles and Denver.

Now the movement has come full circle.

Leaders of three unions for teachers and school service workers say how long this one goes on will be a day-to-day decision.

An amended bill that the Senate passed Monday now goes back to the House of Delegates. Among other things, it would create the state's first charter schools.