We examined how ACT® Aspire® (from grades 8 to 10), PreACT® (from grade 10), and ACT® test scores (from grades 10 and 11) relate to students' chances of scoring a 3 or higher as well as 4 or higher on selected Advanced Placement (AP) exams. Data for the study was available for 49,220 students from 318 high schools who had taken at least one AP…

Using a sample of schools testing annually in grades 9-11 with a vertically linked series of assessments, a latent growth curve model is used to model test scores with student intercepts and slopes nested within school. Missed assessments can occur because of student mobility, student dropout, absenteeism, and other reasons. Missing data…

Educational accountability has grown substantially over the last decade, due in large part to the No Child Left Behind Act of 2001. Accordingly, educational researchers and policymakers are interested in the statistical properties of accountability models used for NCLB, such as status, improvement, and growth models; as well as others that are not…