Nine 2nd- and 3rd-grade English learners with and without disabilities received instruction on opinion essays using the self-regulated strategy development (SRSD) model of instruction. A special education teacher/researcher implemented the intervention with high fidelity 5 days a week for 25 min per session. We used a single-subject multiple-probe…

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. This situation arises…