This paper explores the ways in which school leaders are turning to student services staff as local experts in data analysis and use to meet the demands of high-stakes accountability. The authors have been collecting data, as part of a 5-year National Science Foundation-funded study, on how school leaders create data-driven systems to improve instruction at their schools. They found that while schools already had significant capacity to design curriculum-level interventions to address the needs of groups of students, leaders in the schools investigated turned to special education practices and professionals to provide the in-house expertise necessary to create a variety of student-level interventions. This paper provides a picture of the increased role that student services staff have had in developing and maintaining program- and student-level support programs. Specifically, it investigates two central issues: (1) the practices of student services staff provide a precedent for student-level intervention design; and (2) student services staff play new roles as data-savvy instructional leaders. (Contains 1 figure and 3 footnotes.) [This paper was originally prepared for the annual convention of the University Council for Educational Administration (San Antonio, Texas, 2006).]