The diversity of students in our classrooms is increasing; the need to shape curriculum and instruction to maximize learning for all students is more urgent than ever. One school district has spent 16 years transforming itself to value differentiated instruction as an expectation. The endeavor has produced successes to celebrate and failures to learn from. In this session, the presenter will share descriptions of systemic strategies--including the use of assessment, teacher support, and curriculum integration--all interspersed with anecdotal experiences.