This report summarizes how school and district leaders and academic coaches in two Texas school districts used assessment and other types of data to assess the quality of teaching and learning, to coach and supervise teachers, and to guide management decisions. The report also describes how district and school leaders supported teachers' use of data. The results in this report are based on interviews with district and school leaders and academic coaches, supplemented by observations of teacher team meetings. The data most frequently used were from three- or nine-week tests and from classroom observations. School leaders also reported using data from non-assessment sources such as attendance, discipline referrals, and surveys to intervene with students and adjust school procedures. The following are appended: (1) Questions for District Leaders; (2) Questions for School Leaders; and (3) List of Codes Used for Interview Analysis.