Delia T. Garrity has been a public school educator for 37 years, serving as a math teacher, teacher of the gifted, mathematics department chairperson, curriculum supervisor, assistant principal, and assistant superintendent. Since 1999, she has been the assistant superintendent for curriculum and instruction in Rockville Centre School District, New York, where she provided the leadership in opening academic doors to all students and designed a comprehensive professional learning model for teachers. During her tenure as assistant principal of South Side Middle School in Rockville Centre, Delia facilitated the school's transformation from a tracked system to one that offers all students an honors curriculum in heterogeneous classes. She received the New York State Middle School Assistant Principal of the Year Award in 1996. She has taught graduate courses on mathematics education at Long Island University and regularly gives presentations on detracking as a model of successful school reform to local and national audiences. Delia has authored or coauthored articles in The School Administrator and Arithmetic Teacher. She can be reached at dtgarrity@gmail.com.