Teacher Shortage in the United States: Understanding a Structural Crisis

Teacher shortages have moved from a periodic concern to a structural feature of American education. Districts across the country report difficulty filling teaching positions, with particularly severe shortfalls in special education, mathematics, science, foreign languages, and schools serving high proportions of students from low-income families. Understanding why the shortage exists and what the research suggests about addressing it requires distinguishing between short-term labor market dynamics and the longer-term structural factors that have made teaching a less attractive career choice for a generation of potential educators. The pipeline into teaching has contracted significantly. Enrollment in teacher preparation programs fell by more than one-third between 2009 and 2019, a decline that preceded the COVID-19 pandemic but that the pandemic appears to have accelerated in many states. The reasons people give for not entering or leaving teaching include compensation relative to other degree-requiring careers, lack of professional autonomy, challenging working conditions, concerns about school safety, and the emotional demands of the work. Research on career choice finds that compensation is a significant factor but rarely the only one, and that working conditions and professional respect are weighty considerations. Compensation is an unambiguous part of the picture. Teacher salaries have declined in real terms relative to other professions requiring comparable education over the past four decades. In most states, a teacher with ten years of experience and a master's degree earns substantially less than comparably educated professionals in business, engineering, healthcare administration, or public service. Regional variation is significant, with some districts in high-cost metropolitan areas paying considerably more than rural and suburban districts in low-cost states. Research on salary effects on teacher quality and retention finds that higher salaries attract more academically talented candidates and reduce turnover, particularly in high-shortage areas and subjects. Retention is as important as recruitment. Research on teacher attrition finds that a substantial share of new teachers leave the profession within five years, and that the school characteristics associated with high turnover are consistent: low administrative support, poor school climate, challenging student behavioral conditions, limited autonomy, and inadequate resources. Schools with high concentrations of students from low-income families tend to have the highest turnover rates, creating a compounding disadvantage in which the students who most need experienced teachers are most likely to encounter teachers in their first or second year. Working conditions research documents significant variation in the non-salary features that shape teacher experience. Schools with strong instructional leadership, where principals are seen as supportive and effective, have substantially lower turnover than schools with weak leadership. Opportunities for professional collaboration and development, reasonable class sizes, adequate planning time, and access to resources and materials all appear in research on what keeps effective teachers in the profession. These conditions are not evenly distributed across schools, and the distribution tends to disadvantage schools in low-income communities. The geographic dimension of the shortage is significant. Rural districts and districts in states with lower salaries face the most persistent challenges in recruiting teachers. Remote communities may not attract candidates from outside the area and may struggle to retain locally trained teachers who see more opportunities in urban or suburban settings. Some states have developed loan forgiveness programs, housing assistance, and rural teaching scholarships to attract candidates to high-need areas, with mixed evidence of effectiveness. Diversity in the teaching workforce is a related concern. Research finds that teacher-student racial match is associated with better outcomes, particularly for students of color, and that having teachers who share students' backgrounds and experiences benefits student engagement and achievement. However, the teaching workforce has remained predominantly white even as student populations have diversified. Barriers to entering teaching that are particularly salient for prospective teachers of color include the cost of licensure requirements, the income sacrifice of student teaching, and the challenges of navigating teacher preparation programs that may not reflect their perspectives and experiences. Alternative certification programs have expanded as a pathway to address shortages, allowing individuals with bachelor's degrees and relevant subject knowledge to begin teaching while completing pedagogical training. Research on the outcomes associated with alternatively certified teachers compared to traditionally certified teachers is mixed, with some studies finding similar effectiveness and others finding that inadequate pedagogical preparation produces difficulties in classroom management and instructional design that disadvantage students. Program quality varies widely. Policy responses to teacher shortages have included across-the-board salary increases, signing bonuses for high-need subjects and schools, grow-your-own programs that recruit local residents into the teaching workforce, expanded loan forgiveness for teachers in high-need areas, and investments in teacher housing in high-cost districts. Research supports targeting compensation improvements toward shortage areas and subjects rather than across-the-board increases, and suggests that working conditions are as important as compensation in retention. The teacher shortage reflects a broader question about what society values and how that valuation is expressed in compensation, working conditions, and professional respect. Research provides tools for understanding what drives the shortage and what approaches have promise, but the choices about how to prioritize education as a public investment ultimately belong to communities and their elected representatives.