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The Russell ProjectInstitute for Public Policy & Democratic Thought
Report

Separate schools: educational segregation in three metropolitan areas

Buenos Aires, Bogotá and Lima share a pattern: a school's social composition predicts learning outcomes better than a student's individual socioeconomic status.

6 August 2026·26 min read·72 pages

Public school yard during break.
Public school yard during break.

Buenos Aires, Bogotá and Lima share a pattern: a school's social composition predicts learning outcomes better than a student's individual socioeconomic status.

Social policy is almost always assessed by formal coverage. This work starts from a different question: what does a concrete person actually receive, of what quality, at what distance from home and at what cost in time.

The central finding

The evidence shows that outcome gaps are explained less by aggregate spending levels than by their territorial distribution and by the stability of the teams delivering the service.

Residential and institutional segregation reinforce each other: the social composition of the establishment predicts outcomes over and above individual household characteristics.

Policy implications

Improving outcomes requires acting on the composition and location of services, not only on their funding, which turns social policy into territorial policy.

Formal equality of access coexists comfortably with inequality in what is actually received.

Recommendations

  1. 01Publish quality and composition indicators at establishment level, with privacy safeguards.
  2. 02Link resource allocation to location, not only to enrolment or registry counts.
  3. 03Stabilise delivery teams through regular competitive recruitment and professional careers.
Public school yard during break.

Public school yard during break.

Archive photograph

Methodology

The study uses georeferenced administrative microdata, household surveys and qualitative fieldwork in the territories analysed.

This text is part of the institute's standing editorial line. Data and replication code, where applicable, are published in the Data section.

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