Improving social, emotional, and behavioral outcomes of students with and at-risk for emotional and behavioral disorders (EBD) remains a challenge for educators, and it has long been noted that teachers do not consistently use effective instructional practices with students with EBD. Identifying evidence-based practices that address the problems experienced by students with EBD is a priority for the field, but there exist implementation challenges in authentic classroom settings. The purpose of this article is to address one implementation barrier by distilling the common practice elements found in evidence-based programs (EBPs) and practices delivered by teachers designed to target the social, emotional, and behavioral problems in young students. We conducted a systematic review of EBPs and early elementary classroom practices that have been evaluated in randomized group designs, quasi-experimental designs, and single-case experimental designs. A total of 103 articles employing 68 group (n = 53 randomized group designs, n = 15 quasi-experimental designs) and 35 single-case designs were identified, and an iterative process was used to identify common practice elements. Twenty-five practice elements were identified and submitted to review by experts. After expert review, 24 practice elements remained. Implications for practice and training as well as future research are discussed. [The article was published in "Journal of Emotional and Behavioral Disorders" (EJ1215242).]