Title: The Impact of Early Childhood Education on Long-Term Academic and Social Outcomes
Abstract
This paper examines research on the long-term impacts of early childhood education programs. A review of longitudinal studies finds that high-quality preschool programs have been shown to improve cognitive abilities and school achievement for children from low-income families. Benefits often persist into the teenage years and include higher rates of program completion, less need for special education services, and decreased involvement in criminal activity. Reviews of cost-benefit analyses indicate that early education programs can provide a high return on investment to both individuals and society through increased economic productivity and reduced welfare costs. While positive effects vary depending on program quality and intensity, research strongly suggests that investing in early learning opportunities can help at-risk children start school ready to learn and experience long-lasting positive outcomes.
Introduction
A growing body of research has demonstrated that a child’s early years, from birth to age five, lay the foundation for subsequent development. During this period, neural connections in the brain are forming at a rapid pace in response to environments and experiences. For disadvantaged children in particular, lack of early learning opportunities can put them at risk for lower school achievement and social problems down the road (Shonkoff & Phillips, 2000). Over the past 50 years, large-scale early childhood education programs have aimed to provide quality learning experiences to young children from low-income families to help close readiness gaps before kindergarten.
This paper reviews longitudinal research evaluating the long-term impacts of two well-known preschool initiatives in the United States—the HighScope Perry Preschool Program and the Abecedarian Early Childhood Intervention. It then examines results from pooled analyses of multiple studies. The paper focuses on cognitive abilities and academic achievement as children progress through school, rates of special education placement, high school completion, and indicators of social adaptation such as teenage pregnancy, incarceration, and earnings potential in adulthood. Cost-benefit analyses are also considered. The review aims to determine whether investing public dollars in high-quality early learning programs leads to lasting positive outcomes, both for individuals and society.
Review of Longitudinal Studies
HighScope Perry Preschool Program
The HighScope Perry Preschool Study is one of the earliest and most well-known longitudinal evaluations of a preschool program. Launched in 1962 in Ypsilanti, Michigan, the study involved 58 African American 3- and 4-year olds identified as being at high risk for school failure based on low family income and low IQ scores. Children were randomly assigned to either the program group, which received a high-quality preschool program using the HighScope educational model for 2 years, or a control group that received no preschool services. Follow-ups have been conducted regularly through age 40 (Schweinhart et al., 2005).
Key findings from the Perry Preschool Study include:
At age 5, program group children had significantly higher IQ scores than controls. By age 10, gains declined but program children still scored higher on academic tests. By ages 14-15, they were less likely to be placed in special education.
By age 27, program group members were more likely to have graduated from high school and were earning more money on average than controls. They were also more likely to hold a job.
By age 40, the program group had higher earnings, were more likely to hold a job, had committed fewer crimes, and were more likely to have graduated from high school than controls.
A cost-benefit analysis estimated over $16 of benefits for every $1 spent, through increased tax revenues from higher earnings and reduced public expenditure on welfare, healthcare, and criminal justice (Belfield et al., 2006).
The Abecedarian Early Intervention Project
The Abecedarian study, conducted in Chapel Hill, North Carolina from 1972-1977, was an intensive, full-day, full-year early education program from infancy through age 5 focusing on language, cognitive skills, and social-emotional development (Campbell & Ramey, 1994). It involved 111 children identified at high risk for poor developmental outcomes due to low family income or low cognitive abilities screened in infancy. Again, children were randomly assigned to an intervention group which received full-time, center-based early education, or a control group that received community services but no Abecedarian preschool. Follow-ups have continued into adulthood.
Key findings from the Abecedarian study include:
At ages 12-13, program group children scored significantly higher than controls on reading and mathematics tests. Differences diminished but remained significant through young adulthood.
By age 21, more program group members had graduated from a 4-year college compared to controls. They were also more likely to hold a skilled job.
Program group members had significantly higher earnings, were less dependent on welfare support, and were more likely to save money than controls up to age 30.
A cost-benefit analysis projected an estimated $4 return for every $1 invested due to increased productivity and tax revenue, and decreased welfare costs (Masse & Barnett, 2002).
Pooled Analyses of Multiple Studies
Several large-scale analyses have pooled longitudinal data from multiple early childhood education studies to increase statistical power and generalizability. For example:
A meta-analysis of 123 early education programs found cognitive impacts persisted through the high school years, with stronger effects for more disadvantaged, intensive interventions of higher quality (Camilli et al., 2010).
A pooled analysis of 4 studies including Abecedarian and Perry found initial cognitive gains narrow over time, with long-term impacts primarily on education, economic self-sufficiency, and reduced social welfare costs rather than test scores alone (Reynolds et al., 2011).
An Institute of Education Sciences What Works Clearinghouse review of 35 studies found strong evidence of initial and persisting cognitive/academic benefits for high-quality preschool programs, especially from age 3-4 for disadvantaged children (US Dept. of Education, 2015).
Cross-national analyses indicate high-quality early childhood education reduces social disparities and increases long-term educational and economic outcomes across a diversity of settings (OECD, 2017).
Discussion and Conclusions
The research clearly demonstrates that high-quality preschool education can help at-risk children start school on an equal footing with peers of higher socioeconomic status, especially when programs are intensive, well-implemented, and target children from 3-4 years of age. Gains are consistently seen in improved cognitive functioning that facilitates learning, higher rates of high school completion, increased workforce participation, and lower criminal justice system involvement. Analyses considering long-term follow-ups and costs suggest early interventions can provide high returns on investment through strengthened economic productivity and autonomy as children enter adulthood. While effects tend to diminish over time, initial cognitive boosts appear to positively influence life trajectories and decision-making in ways that decrease social service needs. Research also indicates long-lasting impacts are greatest when programs are of the highest quality.
Limitations include the small sample sizes of some pioneering studies. Pooled data analyses help address this by including findings across disparate studies. Additional research on newer models of effective preschool programming can further validate lasting benefits. A challenge is bringing proven programs to scale while maintaining quality. Yet the preponderance of scientific evidence confirms investment in high-quality education starting in the early years of life represents an approach that positively impacts both individuals and society for many years into the future. With sustained public support and ongoing program development, early learning can help ensure all children gain equal opportunities to develop their full potential.
References
Belfield, C., Nores, M., Barnett, S., & Schweinhart, L. (2006). The High/Scope Perry Preschool Program. Journal of Human Resources, 41, 162–190.
Camilli, G., Vargas, S., Ryan, S., & Barnett, W. S. (2010). Meta-analysis of the effects of early education interventions on cognitive and social development. Teachers College Record, 112(3), 579-620.
Campbell, F. A., & Ramey, C. T. (1994). Effects of early intervention on intellectual and academic achievement: A follow‐up study of children from low‐income families. Child development, 65(2), 684-698.
Masse, L. N., & Barnett, W. S. (2002). A benefit cost analysis of the Abecedarian early childhood intervention. National Institute for Early Education Research working paper.
OECD. (2017). Starting Strong 2017: Key OECD Indicators on Early Childhood Education and Care. Paris: OECD Publishing.
Reynolds, A. J., Temple, J. A., Robertson, D. L., & Mann, E. A. (2001). Long-term effects of an early childhood intervention on educational achievement and juvenile arrest. JAMA, 285, 2339–2346.
Schweinhart, L. J., Montie, J., Xiang, Z., Barnett, W. S., Belfield, C. R., & Nores, M. (2005). Lifetime effects: The HighScope Perry Preschool study through age 40. Ypsilanti, MI: HighScope Press
Shonkoff, J., & Phillips, D. (2000). From neurons to neighborhoods: The science of early childhood development. National Academies Press.
US Department of Education, Institute of Education Sciences, What Works Clearinghouse. (2015, July). Early childhood education interventions for children with disabilities intervention report. Retrieved from https://ies.ed.gov/ncee/wwc/Docs/Intervention
Andrew Stroud