A two-day walkout by thousands of West Virginia public schoolteachers and employees to protest low pay will continue on Monday, organizers said on Friday afternoon.

The American Federation of Teachers-West Virginia, the West Virginia Education Association and the West Virginia School Service Personnel Association organized the statewide action, which left more than a quarter of a million students out of school on Thursday and Friday in the state’s 55 counties.

Christine Campbell, the president of the American Federation of Teachers-West Virginia, said the strike could last beyond Monday if necessary. Teachers across the state, she added, “have made their voice clear.”

“They believe that not enough has been done,” she said.

Organizers say teachers are so poorly paid in the state that some must take second jobs to make ends meet. In 2016, the average salary for a teacher in West Virginia was $45,622, ranking it 48th in the country, according to the National Education Association.