Parent-school engagement is a contributor to student achievement, but few relevant programs exist for immigrant Latino families. This article describes the design, pilot implementation, and evaluation of a parent-engagement Extension program, developed and implemented in Spanish. The purpose of the program is to help parents develop and/or strengthen their relationships with school staff and teachers, build skills in navigating the U.S. school system, and increase their self-efficacy for supporting their children's success in school. Development of the program curriculum comprised a participatory approach that involved input from cultural guides and focus group sessions conducted in Spanish. Evaluation results indicate positive changes related to most program goals and increased parent-school engagement.