Across the globe, schools are seen as an essential context for building socio-emotional capacities in adolescents, particularly for marginalized youth, who have been systematically and historically excluded from accessing opportunities and resources typically available to members of different social groups (Gil-Kashiwabara, Hogansen, Geenen, Powers, & Powers, 2007). However, despite this ideal, education has not yet reached its potential in promoting equal outcomes for all children andadolescents (American Psychological Association Presidential Task Force on Educational Disparities, 2012; Burkham & Lee, 2002; Gurria, 2016; Hampden-Thompson & Johnston, 2006). There exists a need to identify school practices that may enhance socio- emotional development and have implications for reducing disparities in academic achievement, educational attainment, and other indicators of well-being.

The aim of this dissertation, therefore, is to explore school and classroom practices that may be particularly effective in supporting the socio-emotional development of marginalized adolescents. I focus on two distinct populations: youth affected by violence in Colombia, and students of color within the United States. In Study 1, I explore whether three aspects of school climate – safety, connectedness, and services – buffer the negative implications of violence exposure for adolescent development in a Colombian sample. In Study 2, I determine how culturally responsive teaching practices in schools with high concentrations of students of color in the United States can be integrated into our current conceptualization of what constitutes high quality teaching, by examining profiles of teaching practices and associations between these profiles and teacher and classroom characteristics and student behaviors.

This dissertation examined Mexican American individuals' romantic relationships within two distinct developmental periods, adolescence and adulthood. Study 1 used latent class analysis to explore whether 12th grade Mexican Americans' (N = 218) romantic relationship characteristics, cultural values, and gender created unique romantic relationship profiles. Results suggested a three-class solution: higher quality, satisfactory quality, and lower quality romantic relationships. Subsequently, associations between profiles and adolescents' adjustment variables were examined via regression analyses. Adolescents with higher and satisfactory quality romantic relationships reported greater future family expectations, higher self-esteem, and fewer externalizing symptoms than adolescents with lower quality romantic relationships. Similarly, adolescents with higher quality romantic relationships reported greater academic self-efficacy and fewer sexual partners than adolescents with lower quality romantic relationships. Finally, adolescents with higher quality romantic relationships also reported greater future family expectations and higher academic self-efficacy than adolescents with satisfactory quality romantic relationships. To summarize, results suggested that adolescents engaged in three unique types of romantic relationships with higher quality being most optimal for their adjustment. Study 2 used latent growth modeling to examine marital partners' (N = 466) intra- and inter-individual changes of acculturative stress, depressive symptoms, and marital quality. On average across the seven years, husbands' acculturative stress remained steady, but wives' significantly decreased; partners' depressive symptoms remained relatively steady, but their marital quality significantly decreased. Although partners' experiences of acculturative stress were less similar than their experiences of depressive symptoms and marital quality, overall their experiences were interconnected. Significant spillover and crossover effects emerged between partners' initial levels of acculturative stress and depressive symptoms and between depressive symptoms and marital quality. Moreover, changes in husbands' depressive symptoms were negatively associated with changes in their marital quality. Overall, results suggested that partners' experiences were interconnected across time.