School-based mental health treatment programs are vital for providing access to care, assessing trauma and risk to decreasing negative coping mechanisms for students attending public school in marginalized communities. This doctoral project focuses on a school-based mental health intervention program called PATHWAYS, which has been implemented in three schools in an urban public school district. This research study's goal was to explore the performance scores of adolescent students referred to the program for mental health concerns to explore the trends over time to evaluate how the program affected students' well-being and coping strategies. This project examined the impact of demographic variables as mediators for performance scores and compared mean differences pre- and post- treatment intervention. The findings have shown statistically significant improvements in students' lives, with a decrease in the use of negative coping skills. This means students were able to implement and find healthier ways to manage their mental health symptoms and challenges. This is vital to understand as school-based interventions like PATHWAYS can assist in promoting and educating students about distress tolerance to help them feel better to manage their emotions in an effective way. The results on the ACS-2 assessment offered evidence that the PATHWAYS program intervention had a positive impact, as students reported using fewer negative coping strategies after receiving trauma- based treatment intervention. This validates the program's goal to effectively assist students in reducing their reliance on negative coping skills when dealing with mental health challenges, especially for multicultural students.However, the study found that students' knowledge about post-traumatic stress disorder (PTSD) did not increase after participating in the PATHWAYS program. A paired-samples t-test showed no significant difference between the pre- and post-assessment scores on the PTSD Knowledge Scale. Overall, while the PATHWAYS program assisted in promoting positive coping strategies, there is still work to be done in proving additional psychoeducation to students about PTSD and its effects. This project highlights the importance of school-based mental health treatment programs, particularly in urban communities to make a difference in students' lives by teaching them healthier ways to cope with their mental health. However, there is a need to continue improving mental health education to ensure students, parents, teachers and school staff have a better understanding about diagnosis like PTSD. Interpretations and implications of these significant findings are further discussed in this study. [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.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]