Teacher Unions: Why They Matter and What They've Won

Why Unions Still Matter for Teachers

Public school teachers remain one of the most unionized workforces in the United States. According to the Bureau of Labor Statistics, roughly 33% of public sector workers belong to a union, compared with about 6% in the private sector. Among K-12 teachers, the share is higher still: the NEA and AFT together represent more than 4.5 million educators and school staff.

That density is not nostalgia. It is what stands between our students and the steady push to underfund classrooms, privatize buildings, and silence the people who actually teach. When teachers have a collective voice, schools have a fighting chance.

4.5M+

Educators represented by NEA and AFT combined

10.2%

Average wage premium for union members (EPI)

33%

Public sector union membership rate (BLS 2024)

What Unions Have Actually Won

Every protection we take for granted in our classrooms was bargained for. The school day has a defined end because someone fought for it. Planning periods exist because someone struck for them. The fact that a principal cannot fire us on a whim is not generosity. It is contract language, won at the table.

Concrete Wins From Collective Bargaining

•Professional salary schedules that reward experience and credentials
•Healthcare and defined-benefit retirement plans
•Due process protections against arbitrary dismissal
•Class size limits and guaranteed planning time
•Safety standards and air quality requirements
•A formal voice in curriculum decisions and discipline policy

The Coordinated Attack on Educator Rights

The single largest legal hit to public sector unions in a generation was Janus v. AFSCME (2018), in which the Supreme Court ruled that non-members cannot be required to pay fair-share fees, even though unions are still legally obligated to represent them. The decision was designed to drain union budgets and weaken bargaining power. Five years later, public sector union density has held remarkably steady, but the financial pressure is real.

State-level attacks have been just as consequential. North Carolina, South Carolina, and Georgia still prohibit public sector collective bargaining outright. Texas restricts it to a narrow set of public employees. Wisconsin's 2011 Act 10 gutted teacher bargaining and produced exactly what its authors promised: lower pay, faster turnover, and a measurable decline in teacher experience.

Bargaining Under Attack

Many states have stripped or narrowed what teachers can bargain over. The pattern is consistent: limit negotiations to wages and benefits, then refuse to negotiate seriously on either. Class size, planning time, and curriculum protections vanish from the table.

Right to Organize

Anti-union campaigns, often funded by groups with no presence in the school building, target new teachers with opt-out messaging and lawsuits designed to make membership feel risky or pointless.

The Right to Strike

Teachers in roughly a dozen states have the legal right to strike. In most others, including Pennsylvania's neighbors and much of the South, public sector strikes are banned outright. That has not stopped educators from walking out when contracts collapse, but it does mean strikers face fines, decertification threats, and personal legal risk.

Recent strikes have shown what is at stake. Chicago teachers struck for eleven days in 2019 and won a nurse in every school, more counselors, smaller class sizes, and protections for undocumented students. Los Angeles educators struck the same year and won lower class size caps and green space funding. Minneapolis walked for three weeks in 2022. Oakland walked in 2023. Each of these strikes was as much about students as about salaries.

Bargaining for the Common Good

Educator unions increasingly use their collective power to push for things no individual member can win alone. The Bargaining for the Common Good framework treats the contract as a community document, not just an employment agreement. The premise is simple: teaching conditions are learning conditions, and learning conditions extend past the school gate.

Common Good Wins

•Chicago 2019: Nurses, social workers, and librarians written into the contract
•Los Angeles 2019: Lower class sizes, less standardized testing, more green space
•Minneapolis 2022: Mental health staffing and recruitment of teachers of color
•Oakland 2023: Community schools and housing assistance for staff
•LAUSD 2023: Special education staffing and family supports

What Teachers Can Do

1.Join, if you haven't already. Membership is not symbolic. Dues fund legal representation, contract negotiations, and the political work that keeps anti-union legislation from passing.
2.Run for building rep. Most union work happens at the school level. The building rep is the person who knows the contract and helps colleagues use it.
3.Read your contract. Every teacher should know the protections they already have. Most grievances we lose are grievances we never filed.
4.Show up to bargaining. Open bargaining is increasingly common. A packed room changes the temperature of the conversation.
5.Build with the community. Parents and students are not the opposition. They are the coalition that wins common good campaigns.

Our Union Principles

Full bargaining rights: Educators should be able to negotiate over all matters affecting their work and their students.

Right to strike: When contracts collapse and good-faith bargaining fails, educators must be able to withhold labor.

Fair share: All who benefit from union representation should contribute to its cost.

Democratic unions: Members should control their unions through transparent, accessible democratic processes.

Bargaining for the common good: Contracts should reflect what students, families, and the wider community need - not just what management is willing to give.

Related reading: Teacher Pay | Teacher Autonomy | Charter Schools | Community Schools