A system-level analysis of the effectiveness of special education was conducted in an educational cooperative comprised of six school districts. In total, 96 students (grades 1-6) were assessed three times during the year on direct, curriculum-based measures of achievement in math, reading, and spelling. Analyses of student performance data were…

The focus of this study was on the visual analysis of time series data for evaluating educational programs. Two characteristics of the data--changes in slope and variability--and two characteristics of evaluation--training in data utilization and the use of aimlines/decision rules--were manipulated. A total of 51 students and/or teachers in…