The Long Shadow of the Classroom: How Chile’s 1960s School Expansion Redefined Economic Mobility

By Economic Policy Review Staff
May 2026

A newly released working paper from the National Bureau of Economic Research (NBER), titled Working Paper 35042, has provided a definitive look at the long-term socioeconomic impact of one of the 20th century’s most ambitious educational infrastructure projects. By analyzing the massive expansion of primary school classrooms in Chile during the mid-1960s, researchers have uncovered evidence that government investment in physical educational infrastructure acts as a powerful catalyst for multi-generational wealth and gender equity.

The study, which utilized extensive census data and a robust quasi-experimental design, concludes that the benefits of the 1965–1966 Chilean school construction program were not merely felt by the students who first occupied those desks, but echoed through the decades into the lives of their children. The findings suggest a staggering marginal value of public funds (MVPF) of 13, a figure that highlights the profound return on investment for public education initiatives.

The Historical Context: Chile’s Educational Pivot (1965–1966)

To understand the magnitude of these findings, one must view the program through the lens of the mid-1960s. Chile, like many developing nations at the time, faced a significant crisis in human capital. In rural and impoverished urban areas, the "supply-constrained" nature of the education system meant that thousands of children were effectively excluded from the formal schooling system due to a sheer lack of physical infrastructure.

Between 1965 and 1966, the Chilean government executed a rapid-response policy. Rather than waiting for complex administrative overhauls, the state prioritized the immediate construction and staffing of thousands of primary school classrooms. This was a targeted intervention, designed to bring education to the geographic peripheries of the country.

A Chronology of the Intervention

• 1964: Political momentum builds for educational reform as part of a broader national development strategy aimed at improving literacy and labor force participation.
• 1965: The construction initiative begins in earnest. Government resources are diverted to rural areas and underserved urban neighborhoods to close the "access gap."
• 1966: The rapid building phase concludes, leaving thousands of new, staffed classrooms operational across Chile.
• 2026: Researchers at the NBER publish a retrospective analysis (Working Paper 35042) utilizing six decades of census and administrative data to measure the lifetime outcomes of the generation impacted by the 1965–66 expansion.

Data-Driven Insights: Measuring Success

The NBER study utilizes a "quasi-experimental design," a method that allows researchers to isolate the impact of the school construction from other confounding economic variables. By comparing communities that received new schools with those that did not, the study creates a "control group" of individuals who were similar in every way except for their proximity to the new infrastructure.

Closing the Gender Gap

Perhaps the most striking discovery in the research is the impact on gender equality. Historically, in the mid-1960s, female attainment in Chilean education lagged significantly behind that of males. The 1965–66 construction program served as a great equalizer. The data shows that the availability of local classrooms substantially closed the persistent female disadvantage in school attainment. By removing the physical barrier to entry, the policy allowed young women to complete their primary education at rates that eventually mirrored—and in some areas, surpassed—their male counterparts in the workforce.

The Multiplier Effect: Intergenerational Spillovers

The study goes beyond the primary recipient of the education. It documents significant "intergenerational spillovers." Mothers who gained access to these new schools were statistically more likely to see their own children progress through school on time and complete higher levels of education. This "transmission of human capital" confirms the theory that education is not just an individual asset, but a household asset that alters the trajectory of future generations.

The Marginal Value of Public Funds (MVPF)

In economics, the MVPF is a critical metric for policymakers. It represents the value of a policy to the beneficiary, divided by the net cost to the government. An MVPF of 1.0 would mean the policy is a break-even investment. An MVPF of 13—the figure calculated by the researchers—is extraordinarily high. It suggests that for every dollar spent on those 1960s classrooms, the Chilean economy and society reaped 13 dollars in long-term benefits, including higher tax revenues from better-paid workers, reduced social costs, and the economic benefits realized by the children of the original students.

Implications for Modern Economic Policy

The findings of Working Paper 35042 arrive at a time when global governments are grappling with how to allocate limited fiscal resources. In the wake of the 2025 Martin Feldstein Lecture, where N. Gregory Mankiw discussed the "Fiscal Future," the question of how to balance budgets while fostering growth has become the central debate of the decade.

1. Infrastructure as Human Capital

The NBER research challenges the traditional view that infrastructure spending should be limited to roads, bridges, or energy grids. It argues that physical educational infrastructure—the literal brick-and-mortar classroom—is a high-yield investment. In an era where digital learning is often touted as the future, this study serves as a reminder that the physical presence of a school remains a critical anchor for social and economic development.

2. The Case for Targeted Intervention

The Chilean model demonstrates the efficacy of targeting "supply-constrained" communities. By focusing resources on those who have no access at all, rather than spreading funds thinly across the entire population, the government was able to generate outsized returns. This "precision economics" is likely to influence how development agencies and national governments approach educational equity in the coming years.

3. Long-Term Horizons

Most policy assessments are short-sighted, focusing on outcomes within a 5-to-10-year window. The Chilean study proves that the true value of education policy often takes 30 to 60 years to materialize fully. By tracking the intergenerational benefits, the research provides a justification for long-term state planning that transcends election cycles.

Official and Academic Perspectives

While the NBER paper is purely analytical, the implications of its findings have begun to circulate within policy circles. Economists note that the high MVPF is particularly relevant for developing nations currently struggling with the "digital divide" and educational backlogs.

"What we are seeing here is the ‘long-run’ proof of the multiplier effect," says an independent economist familiar with the study. "When you provide a child with a classroom, you are not just teaching them to read. You are changing their earning capacity for forty years, and you are creating an environment where their children are more likely to finish high school. That is the definition of a high-return public investment."

Furthermore, the focus on female attainment suggests that infrastructure is a non-neutral tool. By providing access, the state effectively dismantled systemic barriers that prevented women from participating in the formal economy. This is a vital lesson for modern policymakers looking to boost GDP through greater labor force participation.

Conclusion: Lessons from the 1960s for the 2030s

The NBER’s study of the 1965–1966 Chilean school expansion is more than a historical exercise; it is a blueprint for the future. By providing hard data on the intergenerational returns of education, the paper makes a compelling case for the continued prioritization of educational infrastructure.

As the global economy faces an aging workforce and the challenges of the "fiscal future," the message from the 1960s is clear: the most efficient way to build a robust economy is to build, staff, and empower the local classroom. The "13-to-1" return on investment is not just a statistic—it is a testament to the fact that when a government invests in the potential of its children, the returns are both universal and infinite.

For policymakers, the task is clear: identify the communities currently excluded from the path of progress and commit the resources to build the physical spaces where that progress can begin. As Chile’s history shows, the classrooms we build today will define the economic and social landscape of the next century.