Why Teacher Shortages Persist: What the Data Says for Your Career

At least 56,000 U.S. teaching vacancies and 350,000 underqualified educators in 2025-26 don't prove the profession is collapsing. They mark where credentialed talent is scarce by subject and state. EdWeek reporting on research by Tuan Nguyen and Christopher Redding frames this as a market signal: schools are competing for specific credentials, not simply losing teachers to attrition.

For M.Ed. and certification candidates, including those considering alternative teacher certification, the practical tension is vacancies versus emergency-credential staffing. Shortages concentrate in STEM and special education while veteran teachers retire from a thinned reserve, so a generic license maps poorly onto the districts with the hardest-to-fill classrooms.

Vacancy vs. Certification: Why the Headline Numbers Disagree

A vacancy means there is no adult in the room to teach algebra. An underqualified position means someone is in the room, but not fully prepared for the assignment. That distinction explains why two widely cited shortage figures can both be right and still disagree.

Two Different Problems

Nguyen and Redding's tracking project counts at least 56,000 teaching vacancies for the 2025-26 school year, defined as positions still unfilled after the year begins.¹ It separately counts 350,000 underqualified educators, a category that includes teachers holding irregular, provisional, temporary, or emergency credentials,² as well as certified teachers assigned outside their subject of preparation under state Teacher Certification Exams rules. A school can have zero vacancies and still employ dozens of underqualified staff.

Why the Totals Don't Line Up

The Learning Policy Institute's 2026 scan reports 37,569 unfilled positions and 387,843 teachers who are not fully certified.¹ At first glance that looks close to the other project's combined 406,000, but the underlying data are not directly comparable. LPI had usable vacancy data from only 29 states plus D.C.; Nguyen and Redding attempted all states using a broader search of state reports, news sources, and federal datasets. Both groups call their totals an undercount, and the vacancy numbers depend heavily on what each state chooses to publish. A single state's decision to stop posting vacancy listings can move a national estimate by thousands, which is why "at least" appears in nearly every serious shortage count.

A Rule of Thumb for Readers

When a headline says "400,000 teacher shortage," ask what it counts: empty classrooms, undercredentialed hires, people without a recognized education degree or industry credential for teachers, or both. If both, the number mixes two different problems and is only as reliable as the weakest state's reporting. A credible shortage story tells you which of these it is measuring, and whether the figure reflects a lack of people or a lack of fully prepared people.

What Causes Teacher Shortages: Pipeline, Retirements, and Portability

Teacher shortages persist because teacher pipeline programs have stalled, the reserve of experienced educators is thinning, and state credentialing rules prevent teachers from moving freely to where vacancies are worst.

A Stalled Preparation Pipeline

National enrollment in teacher-preparation programs fell from 880,000 in 2010-11 to 591,000 in 2020-21, roughly 70 percent of the earlier level.¹ Although 39 states reported some enrollment increase in recent Title II years, 12 states saw declines, including Colorado, Massachusetts, North Carolina, and Oklahoma.¹ Texas shows the sharpest warning sign: the number of university-prepared teachers hired fell from 6,987 in 2019 to 4,655 in 2025, a 33 percent drop,² while the share of uncertified teachers more than tripled.³ Missouri's total enrollment reached a 12-year high in 2023-24, but completers remained flat after an earlier decline of about 1,300 between 2011-12 and 2017-18.

A Shrinking Buffer of Veteran Teachers

The large cohort of teachers prepared in the 1990s and 2000s is nearing retirement age, and that used to provide a cushion of experienced educators who could step into hard-to-fill roles. That buffer has shrunk. Districts once relied on this reserve to backfill vacancies, but it is no longer large enough to absorb sudden departures. Intergenerational teaching families have also become less common, weakening an informal pipeline that once guided many young people into the field.

Credentials Do Not Travel

Policymakers often assume teacher license reciprocity lets teachers move to shortage areas, but there is no single national labor market. A California credential does not easily transfer to Texas or Missouri, so a surplus in one state does not relieve a shortage in another.

Pay and Prestige Hit STEM Hardest

Salary and respect are connected pressures. STEM graduates, including many Master's in STEM Education candidates, can earn $60,000 to $70,000 in entry-level industry jobs, while teaching offers lower pay and less prestige. That gap helps explain why STEM classrooms face some of the most acute shortages.

Myths vs. Realities: Attrition, a National Labor Market, and 'No Jobs'

Public-school teacher turnover after COVID is smaller than many headlines suggest. In 2021-22, 84% of teachers stayed in the same school, 8% moved to another school, and 8% left teaching, according to NCES¹. Those are one-year snapshots, not a five-year cohort exit rate. Broader mover-plus-leaver estimates run around 15%, and RAND's 16% annual turnover figure includes both movers and leavers². None of these supports the claim that half of teachers quit within five years.

Turnover Concentrates in the Earliest Years

The national average hides churn where it is most acute. Teachers with fewer than three years of experience had 80% same-school retention in 2021-22, compared with 86% for teachers at 10-14 and 15-plus years¹. Turnover also tracks credential status: not fully certified teachers left schools at 20.1% versus 14.7% for fully certified teachers; among teachers with 1-3 years experience, that gap was about 24% versus 17%. This points to new teacher retention challenges and provisional credentialing, not a profession-wide exodus.

No Single National Market for Teachers

The idea of one national teacher labor market is also misleading. Credentials do not transfer easily across state lines. A California teaching credential does not automatically travel to Texas or Missouri, and licensure reciprocity is inconsistent. Shortages therefore look different by state and subject, not like one uniform crisis.

Pipeline Shortfalls Outweigh Mass Departures

A more useful explanation is a thinning entry pipeline and an aging reserve of veteran teachers, not mass quitting. About 8% of teachers leave the profession in a typical year¹, and less than a third of annual national attrition is due to retirement. Researchers note teacher-certification enrollment has flatlined in most states and the large cohorts prepared in the 1990s and 2000s are nearing retirement. The message is not collapse or a jobless profession; it is a signal about where credentialed teachers are scarce.

Which Subjects and States Face the Sharpest Gaps

Special education and CTE are the most consistent shortage areas

Across 2025-26 state shortage lists, special education teacher openings show up more reliably than any other field. Federal and state designations point to special education, elementary education, language arts, and career and technical education (CTE) as top shortage areas. State reports vary: Iowa counted 221 unfilled special education positions, about 0.58% of all full-time teaching positions,¹ while New York designates a shortage when more than 5% of positions in a subject are filled by uncertified staff.² CTE is also widespread, but states split it into subfields such as agriculture education, business, family and consumer science, and industrial technology.³

National numbers help frame the scale, but they are not precise. State reports behind 2025-26 estimates point to about 425,000 positions that were unfilled or filled by someone without full certification, with roughly 37,600 unfilled and the remainder staffed by teachers on irregular, provisional, or emergency credentials. Those counts depend on states choosing to report vacancy data and on how they define underqualified, so treat them as a rough signal rather than a hard total.

STEM and bilingual labels make national comparisons rough

STEM shortages appear as math, science, computer science, and technology rather than one category. Connecticut lists mathematics and science teacher openings in grades 4-12.⁴ Iowa reports unfilled general science, secondary science, and industrial technology positions.¹ Bilingual and multilingual education is labeled differently across states: Texas uses bilingual/ESL, Connecticut uses bilingual education and TESOL, and Colorado uses culturally and linguistically diverse education.⁴ Those label and grade-span differences mean no clean national ranking exists, but the pattern is consistent: these are hard-to-staff fields.

Location intensifies the shortage

Shortages do not spread evenly. Colorado's 2025-26 data shows rural schools filling 50% or more of open positions through shortage mechanisms, compared with 27.8% statewide.⁵ States also measure shortages differently: Iowa tracks unfilled positions as a share of full-time roles, while Colorado counts positions filled through shortage credentials.⁵ Those measurement gaps make direct state comparisons rough.

Plain-language summary: credentialed talent is scarcest in special education, math and science, multilingual/English learner instruction, and CTE, especially in rural systems where the rural teacher shortage is sharpest and in states with stricter certification or higher demand.

STEM Salary Competition and the Teaching Pay Gap

Salary comparisons clarify why some subjects stay hard to staff. The National Education Association reports a 2024-25 average starting teacher salary of $48,112, up 3.4% from the prior year but only 0.7% after inflation. Master's degree steps lift scheduled starting pay to $51,775 and top pay to $79,581 nationally, though local schedules vary. Across the occupations tracked by the Bureau of Labor Statistics, median pay for elementary, middle, and secondary teachers ranges from roughly $63,970 to $72,040, while many STEM industry entry-level offers land between $60,000 and $70,000. The Economic Policy Institute estimates a 25.2% teacher pay penalty for 2025, meaning public school teachers earned 74.8 cents for every dollar earned by comparable college graduates. BLS wage figures describe the listed occupations, not graduates of any one program. The pay gap is only part of the story: respect and prestige remain the second half of the STEM shortage equation, so an M.Ed. is best evaluated as a long-run credential that can shift earning potential and route graduates toward roles and states with stronger demand.

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