High-quality teacher-student relationships are instrumental to the success of social and emotional learning interventions. Bandura's Social Cognitive Theory (1986), is a theoretical framework that focuses on self-efficacy, collective efficacy, vicarious learning, and triadic reciprocal determinism (i.e., behavior, personal factors, and environmental factors) to promote desirable behaviors and discourage undesirable behaviors. The primary purpose of this quantitative quasi-experimental (non-randomized, controlled) research design case study was to investigate teachers' perceptions of the effect of teacher implementation and student acquisition of social and emotional learning (SEL) skills and behaviors specific to the "Capturing Kids' Hearts-Campus by Design" school-wide intervention. The study sample consisted of 1,490 students and 66 teachers in four elementary schools in a Midwest school district. For research questions one and two, teachers completed voluntary, anonymous online 3-point Likert-type ten item surveys before and after implementation of the intervention. Independent samples t-test analyses were conducted using SPSS Statistics. For research question three, school leaders were asked to submit student out-of-school suspension and discipline referral data to establish baseline outcomes for the three school years preceding initiation of the study. Based on the findings of this study, there appeared to be a relationship between teacher implementation of SEL skills and behaviors, student acquisition of SEL skills and behaviors, and a decrease in out-of-school suspensions and discipline referrals. It can be asserted that classroom management was positively impacted when teachers and students modeled, applied, and reinforced SEL skills and behaviors. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]