This report describes New York City's ACORN (Association of Community Organizations for Reform Now), which has a 20-year history of organizing in the City and emphasizes public education issues. ACORN works at both the neighborhood and policy level. It is one of five case studies in the Indicators Project on Education Organizing, which identified eight indicators of the impact of community organizing for school reform (leadership development, community power, social capital, public accountability, equity, school-community connection, positive school climate, and high quality curriculum and instruction). This report focuses on ACORN's accomplishments in four areas: equity, leadership development, community power, and high quality curriculum and instruction. The report presents a model of the relationship of indicators to goals of the community organizing groups, introduces ACORN, describes the context of education organizing in New York City, and looks at indicators and measures. It concludes by discussing future directions (e.g., reforming public education on a large scale). Three appendices present definitions of indicator areas, the Indicators Project advisory group, and ACORN charts (strategies, results, and data sources). (SM)