All programs and organizations need to evaluate their effectiveness. Involving youth as partners in the evaluation process leads to better data, as well as positive outcomes for all involved. Programs become stronger; organizations may transform, learning how to make youth engagement part of normative practice; youth build new skills and social capital. In its Youth Participatory Evaluation (YPE) web pages, ACT for Youth Center of Excellence offers an overview of YPE, with a closer look at the principles, benefits, and challenges of YPE, and links to resources.