This document describes a case study conducted in a Minnesota middle school to improve math proficiency scores. An eighth grade cohort was identified as having low math proficiency rates. A team of two full-time math teachers and one part-time teacher worked together as a professional learning community, receiving support and training from school leadership. Their efforts focused on data analysis, standards-based grading, and technology tools to track student performance. As a result of these interventions, the cohort's math proficiency increased from 38% to 62% over two years, showing the positive impact of transformational leadership and collaborative teacher teams on student achievement.