This article provides a summary of the five years of implementation of the first cohort of schools participating in Utah's Reading First Initiative. Fifteen schools across six districts comprised this cohort. Performance is compared to the performance of a cohort of matched comparison schools as well as the average state performance on the Utah Language Arts Criterion-referenced Tests (CRTs). Results indicate that Reading First schools appeared to have made greater gains than comparison schools or the state average in the percentage of students achieving proficiency on the CRTs. In addition, the achievement gap for most disaggregated groups was reduced, and greater performance was noted for students who spent three years in Reading First schools rather than one or two. These data are in contrast to the results of the Reading First Impact Study, but highlight the need to examine the contextual effects of systemic reform initiatives such as the Reading First Initiative. (Contains 3 tables, 6 figures, and 2 notes.)