This study investigated the impact the Achieve3000 program had on reading growth and reading proficiency of 1,531 sixth-, seventh-, and eighth-grade students from four Title 1 middle schools in Florida who were enrolled in remedial reading classes. Archival data from the Florida Standards Assessment English language arts provided pre-and-post data for comparison. Paired t-scores were compared to determine if the differences between students in remedial reading classes and the remaining school population were significant. Data analysis of the Achieve3000 program showed a statistically significant difference between students in remedial reading classes and the remaining school population. This study showed that the Achieve3000 program had a medium effect size on the Florida Standards Assessment English language arts scale scores and increased reading proficiency achievement levels for students in remedial reading classes. The results of this study suggested the Achieve3000 program could be effective for closing the reading achievement gap. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]