The big picture: It's getting harder to be a teacher in America

By the numbers

• 94% of public school teachers in the U.S. reported paying for school supplies without reimbursement in the 2014-2015 school year, according to a federal Department of Education survey.
• Teachers spent $479 on average throughout the school year. Some spent up to $1,000 per year, per the same survey.
• Teachers made $58,950 on average in the 2016-17 school year, per data provided by the NCES.
• 78% of Americans feel teachers are underpaid, and 50% of people are willing to pay more taxes to increase their salaries, according to research from the AP.

Costs rise while salaries shrink

While student costs are rising for teachers, 39 states have decreased funding for instructional materials.

In 11 states, plus Washington, D.C., teacher salaries have been declining since 2010, while their cost of living has increased.

What we're hearing

Teachers believe they can make a change because of the power in their votes. And it isn't a coincidence that strikes are being held during an election year.

A lot of legislators' jobs are in trouble right now.

Karvelis told Axios that teachers are watching the way legislators vote and aren't satisfied. Meanwhile, the thousands of teachers who are disgruntled are among potential candidates in support of education.

• Some teachers are prepared to run for seats in Arizona, Karvelis said.
• In Kentucky at least 39 current and former teachers are running for seats in the state legislature in its upcoming primary, per an AP report
• Oklahoma teacher Amanda Jeffers had no intention of running for office before the walkout, she told the AP, but has since changed her mind.

Teachers want to change restrictive laws

It's difficult for several teachers unionize because of right-to-work laws that don't require states to pay union dues.

• So they strike; however, striking for teachers is illegal in all but 12 states. But even if it's legal, striking could risk their pensions or jobs.

The big picture: More teachers will continue to mobilize until the numbers swing in their favor, like teachers in North Carolina did on Wednesday. The growing trend of walking out of the classroom appears to show no signs of stopping, as more teachers feel emboldened by their peers and begin to push for change in their own education systems.