The key findings from this study include the following: the program examined in the study - Cognitive-Behavioral Intervention for Trauma in Schools (CBITS) significantly reduced symptoms of post-traumatic stress and depression in students exposed to violence; the program was successfully delivered by school mental health clinicians; the program produced consistent results and was well accepted by students, staff, and parents; and a version of the program was adapted and delivered by regular school staff with no mental health training. The study was conducted during the 2000-2001 school year and involved 159 students from 2 middle schools in located in Latino neighborhoods in Los Angeles. Students were eligible to participate in the program based on the following criteria: substantial direct exposure to violence, presence of post-traumatic stress symptoms, and willingness to discuss their symptoms in a group setting. The students were assigned to one of two groups: immediate participation in the CBITS program or delayed participation in the program. Following completion of the program, the students were assesses to measure changes in their trauma symptoms. The study's findings show that the CBITS program significantly helped students cope with the devastating effects of violence, and that program participants reported fewer symptoms of post-traumatic stress, depression, and psychological dysfunction. Use of the program in other States and countries is discussed. 2 figures