Despite widespread enthusiasm for remedial education programming with refugee populations, there is little rigorous evidence on how to design and implement such programs. We employ a cluster-randomized design of non-equivalent treatment groups to test the impact of access to two types of program enhancement: longer program duration and the addition of skill-targeted social and emotional learning (SEL) activities for Syrian refugees enrolled in Lebanese public schools. We find that, compared to 10 weeks of programming, 26 weeks marginally increases students' literacy skills (ES = 0.04) and significantly improves behavioral regulation (ES = 0.31), but students reported less positive perceptions of their public school environment (ES= -0.83 to -0.89) and remedial tutoring site (ES= -0.15 to -0.24). We also find that the addition of skill-targeted SEL activities to 26 weeks of programming results in higher student reports of school-related stress compared to programming without skill-targeted activities (ES = 0.21). Implications for program and policy are discussed.