COI 3.0 Technical Documentation

How we built the Child Opportunity Index 3.0
Published: 07.24.2025 Updated: 07.24.2025

Above is the link to the technical document for COI 3.0-2023, published July 2025. This is the most recent version of the Child Opportunity Index technical document.

The technical document for COI 3.0-2021, published in March 2024, is also available

The technical document for COI 2.0, published in January 2020, can be found on this page

Clemens Noelke
Clemens Noelke
Research Director
Nancy McArdle
Nancy McArdle
Senior Research Analyst
Headshot of Brian DeVoe
Brian DeVoe
Senior Data Analyst
Madeline Leonardos
Data Analyst
Photo of Yang Lu
Yang Lu
Data Analyst
Headshot of Robert Ressler
Robert Ressler
Research Scientist
Headshot of Dolores Acevedo-Garcia
Dolores Acevedo-Garcia
Director, Professor of Human Behavior, Research & Policy

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