Fifteen school districts went out on strike in Washington state at the same time earlier this month.
It didn't get the same sort of media attention as West Virginia and Arizona, because it wasn't statewide.
Nevertheless, the results were encouraging.

Evergreen teachers walked for almost two weeks before agreeing to raises averaging 11.5 percent, considerably more than the district’s initial 1.9 percent offer. Battle Ground and Tumwater were the last to settle, after more than two weeks out.

Battleground and Tumwater were especially interesting because they directly defied a court order.

A Clark County Superior Court judge signed an injunction Friday morning against the Battle Ground Education Association, ordering teachers to return to the classroom Monday.

However, at a Battle Ground Education Association general membership meeting that evening, teachers voted by a rate of 89 percent to defy the order. Teachers will remain on the picket lines until a settlement is reached, said Marina Heinz, vice president for the union.

And stay out they did. Eventually the teachers got most of what they wanted.

Tacoma teachers struck for a week, furious at a 3.1 percent raise offer. The district offered bonus pay to anyone who crossed the picket line. Anne Hawkins, who was selected last year as one of Tacoma’s “unforgettable teachers,” protested by submitting her resignation.
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Tacoma teachers finally ratified a tentative agreement with 14.5 percent increases for teachers and 19 percent increases for office professionals. They also reduced the work year from 190 to 185 days.
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Educators were buoyed by what Tacoma Longshore (ILWU) worker Zack Pattin described as “massive shows of support.”
Picket lines and rallies attracted longshore workers, Teamsters, firefighters, carpenters, health care workers, electricians, and school marching bands.

Proof that it pays to fight for what you deserve.
Next up: Los Angeles.