This paper provides practical guidance for researchers who are designing and analyzing studies that randomize schools — which comprise three levels of clustering (students in classrooms in schools) — to measure intervention effects on student academic outcomes when information on the middle level (classrooms) is missing.
The Policy and Practice of Assessing and Placing Students in Developmental Education Courses
This paper reports on case studies conducted at three community colleges to learn about how the colleges assess students for placement in developmental education courses. The case studies identify several problems and challenges, including lack of consensus about the standard for college-level work, the high-stakes nature of the assessments, and the minimal relationship between assessment for placement and diagnosis for instruction.
Rationale, Sites, and Research Design
Launched in 2007 by MDRC and the National Center for Postsecondary Research, the Learning Communities Demonstration is testing models of this promising approach in six community colleges in five states. This report describes the research design, including information about the colleges and their models, the random assignment process, data sources, analysis plans, and reporting schedule.