This paper drills deeper into the documented effects of the Cognitive Tutor Algebra I and ASSISTments intelligent tutoring systems by estimating their effects on specific problems. We start by describing a multilevel Rasch-type model that facilitates testing for differences in the effects between problems and precise problem-specific effect…

In a rigorous evaluation of ASSISTments as an online homework support conducted in the state of Maine, SRI International reported that "the intervention significantly increased student scores on an end-of-the-year standardized mathematics assessment as compared with a control group that continued with existing homework practices."…

This randomized control study compares the efficacy of two response-to-intervention (RTI) models: (1) Dynamic RTI, which immediately refers grade 1 students with the weakest skills to the most intensive intervention supports (Tier 2 or Tier 3); and (2) Typical RTI, which starts all students in Tier 1 and after 8 weeks, decides whether students who…

This paper examines whether a literacy intervention involving generic and content area literacy components can improve both achievement on a standardized reading test and the attainment of secondary school qualifications, and whether the intervention can be implemented by teachers in their regular classroom settings. We report on a design-based…

This study examines math and English standardized test score progress of students who participated in the 21st century program across 2 years of involvement with a focus on the learning trajectories of limited English proficiency (LEP) students. We find that math and English scores are highly associated with the school and program type--even…

The use and scope of after-school programs (ASPs) have always varied with the local context. Historically, affluent families used ASPs to provide enrichment for their children. During the Civil Rights and Black Nationalist movements, African Americans used ASPs for cultural and educational activities. In recent times, ASPs have been used for…