To help policymakers and others measure the school readiness of New Jersey children, the Association for Children of New Jersey (ACNJ) participated in the national School Readiness Indicators Initiative, funded by The Packard Foundation. Guided by research on what helps children succeed in school, ACNJ and various private and public New Jersey organizations, along with partners in 17 other states, developed 24 indicators that measure school readiness. This data can help guide efforts to develop programs and target resources to ensure that the youngest citizens experience the healthy childhood they need to succeed. This booklet outlines the 24 indicators, which are divided into five areas: Ready Children, Ready Families, Ready Early Care and Education, Ready Schools, and Ready Communities.