Thesis advisor: Mary E. Walsh / Poverty has many deleterious effects on child development, including negative impacts on social-emotional health, a developmental domain schools refer to as non-cognitive skills (Dearing, 2008). Unfortunately, children growing up poor often have underdeveloped non-cognitive skills, which significantly predict academic success and well-being (Farrington et al., 2012). Integrated Student Support (ISS) is one emerging approach that holistically supports cognitive and non-cognitive student development (Moore & Emig, 2014). While ISS has been found to improve academic outcomes, limited research examines its impact on social-emotional outcomes. This study focused on one ISS intervention, City Connects, which provides tailored student support plans to every child in a school via school and community-based services (Walsh et al., 2014). The study had three aims. The first was to examine the percentage of City Connects students with and without a social-emotional-behavioral (SEB) Need across levels of risk and service characteristics (i.e., domains, intensity levels, types) in second grade (N=896). The second was to examine improvement in three teacher-rated non-cognitive student outcomes (Prosocial Behavior, Self-Regulated Learning, Academic Effort) from second-fifth grade for City Connects students with and without a SEB Need (N=896). The third was to compare improvement in the same three non-cognitive student outcomes from second-fifth grade for students with a SEB Need in City Connects schools and comparable schools without the intervention (N=1,778). Multilevel modeling assessed aims 2 and 3. Significantly more students with a SEB Need were deemed higher risk and received more health, early intervention, and SEB/counseling services compared to students without a SEB Need in City Connects schools. Further, significant improvements from second-fifth grade were found in Self-Regulated Learning and Academic Effort for City Connects students with a SEB Need compared to those without a SEB Need. Significant improvements were also found over time in Academic Effort for students with a SEB Need in City Connects schools compared to those in comparison schools. Findings support that ISS improves non-cognitive functioning for students attending high-poverty schools. / Thesis (PhD) — Boston College, 2020. / Submitted to: Boston College. Lynch School of Education. / Discipline: Counseling, Developmental and Educational Psychology.