Noncompliance to treatment assignment is widespread in randomized trials and presents challenges in causal inference. In the presence of noncompliance, the most commonly estimated effect of treatment assignment, also known as the intent-to-treat (ITT) effect, is biased. Of interest in this setting is the complier average causal effect (CACE), the…

Classrooms in Czechia are changing. What used to be a relatively ethnically homogeneous environment changed after 1989 and became much more diverse. How are children, both of Czech, as well as migrant origin, coping? What strategies do they use to negotiate their everyday lives in the classroom? We conducted an ethnographic study in two classes of…

Check-In/Check-Out (CICO) is an effective and widely used Tier 2 behavior program in elementary and middle schools. This article describes a pilot study focused on examining the impact and usability of an adapted CICO program in a high school. We used a single-case multiple baseline design across five 9th grade students to evaluate the effects of…

Research on factors that may promote engagement is hampered by the absence of a measure of classroom-level engagement. Literature has suggested that engagement may have 3 dimensions--affective, behavioral, and cognitive. No existing engagement scales measure all 3 dimensions at the classroom level. The Classroom Engagement Inventory (CEI) was…

Multisite trials can clarify the average impact of a new program and the heterogeneity of impacts across sites. Unfortunately, in many applications, compliance with treatment assignment is imperfect. For these applications, we propose an instrumental variable (IV) model with person-specific and site-specific random coefficients. Site-specific IV…