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Early Development Index
How ready are Orange County's children for kindergarten?
For 15 years, First 5 Orange County has measured kindergarten readiness across every elementary school district, in partnership with the UCLA Center for Healthier Children, Families and Communities.
53.0%ready for kindergarten in 2025
Up almost five points since 2015
Sources: First 5 OC Early Development Index page; Annual Report 2024–2025.
Five domains
What the EDI measures
Kindergarten teachers complete a questionnaire for each child in the second half of the school year. It gives a community-level snapshot and is not a screening of individual children.
Physical health & wellbeing
Social competence
Emotional maturity
Language & cognitive development
Communication & general skills
926 teachers
covering more than 22,000 children in the 2025 collection
Explore the map
Interactive map
First 5 OC's existing EDI map is embedded here, with an accessible table of the same results beside it for keyboard and screen-reader users.
Design note · Map embeds are often not usable with a keyboard. The fix is not to remove the map but to publish the same numbers as an accessible table next to it, a WCAG 2.2 AA requirement the conformance report will check.