Introduction: The study analyzes the level of development in emotional intelligence of Secondary Education students. It also checks for statistically significant differences in educational level between Spanish and immigrant students, under the integration program "Intercultural Open Classrooms". Method: 94 students of Secondary Education in the province of Jaen (Spain) have been involved; data was collected through a self-report questionnaire on emotional education (Emotional Quotient Inventory: Young Version, EQ-iL: YV). Results: Outcomes show very high scores for each scale "Stress management" and "Interpersonal" scales yielded the lowest scores. Similarly, there are statistically significant differences in the assessments of Secondary Education students according to their origins; Spanish students show the greatest skill in understanding and controlling their own emotions and communicating them to others. The analyses of variance reveals statistically significant differences between students by educational level; younger students show more positive assessments related to "Intrapersonal" and "Stress Management" scales. Discussion and conclusion: It is vital to implement programs that development emotional intelligence with teenagers in multicultural contexts. Thus, through the development of these skills, a more humane and just society can be achieved, establishing conflict-free coexistence.