In this article, we present a case study of two teachers' experiences implementing a junior-high school physical education curriculum. Using interviews, observations, and document analysis, we organized our data around Brunelle et al.'s (1988) conceptual framework. Our results noted several constraining factors to implementation: lack of time to achieve outcomes, inadequate equipment, large classes, heavy teaching loads, lack of professional development, and lack of consultant support. To facilitate implementation, teachers used school "exploratories" and community facilities, worked with parents, and established user fees. Data indicate that, despite teachers' best efforts, students did not meet all curriculum objectives. [Published in May 2004]