Invest Early is an effective program in preparing low-income students for school success when delivered in sufficient quantity. Wilder Research, in conjunction with the Invest Early leadership team and staff, is conducting a longitudinal and cost-benefit evaluation, documenting and assessing implementation of Invest Early and outcomes for the service system, families, and children. In the short term, Invest Early aims to improve children's school readiness by improving the system of early childhood screening, care and education, by strengthening and empowering families, and by promoting healthy child development. Highlights of this year three summary include: (1) Over the past three years, the percentage of children demonstrating overall proficiency or progress towards proficiency at the end of each program year is trending up; (2) Regular attendance in the year prior to kindergarten (attending at least 66% of the scheduled classes) is associated with kindergarten readiness; and (3) Two years of Invest Early narrows the proficiency gap for low-income students relative to their higher-income peers. [For "Invest Early: Early Childhood Initiative. Year One Evaluation," see ED511608.]