Background: Cluster-randomized experiments that assign intact groups such as schools or school districts to treatment conditions are increasingly common in educational research. Such experiments are inherently multilevel designs whose sensitivity (statistical power and precision of estimates) depends on the variance decomposition across levels.…

This dissertation focuses on a key challenge facing developing countries intent on enhancing their human capital base--namely, the issue of quality. One of the chapters evaluates the effectiveness of the One Laptop per Child (OLPC) initiative in Nepal's primary and lower-secondary schools. Although the OLPC program is being heavily promoted in…

This paper presents a series of illustrative LEGO Mindstorms-based science and math activities, developed under an NSF GK-12 Fellows project, for elementary, middle, and high school grades. The activities, developed by engineering and science graduate Fellows in partnership with K-12 teachers, are grade appropriate, address pertinent learning…