This study from the Everyone Graduates Center aimed to evaluate the different ways of supporting teachers for implementation quality and impact on student learning. Using a randomized controlled trial design, the study assessed the impact of workshops, detailed lesson plans, and coaching on instruction of high school English language arts teachers. Data were collected over two years on a total of 41 schools with 84 teachers and 1,996 students. The study authors reported that coaching consistently and significantly contributed to stronger classroom implementations of the recommended instructional practices for struggling adolescent readers. Lesson materials appeared to strengthen implementations more than workshops alone only for student team discussions of shared materials with good teacher preparations.