Schools with student populations comprised predominantly of students of color, socioeconomically disadvantaged, and English Learners have traditionally been relegated to subpar educational opportunities. The accountability of the No Child Left Behind Act prodded schools to reexamine their instructional practices and implement more effective means of ensuring all students access to rigorous, standards-based curricula. Variation in performance among schools serving similar students suggests that today's achievement gap can be narrowed. This case study examines an elementary school that is successfully narrowing the achievement gap over a sustained period of time through the utilization of various cultural norms, practices, and programs. The replicability of the findings from this case study may contribute to promising results for schools with similar demographics. [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.]