We examined the impacts of the Co-Parenting for Successful Kids program offered by University of Nebraska Extension. Using a sample of 2,622 parents who participated in the program in 2015, we measured their knowledge change and ability to perform cooperative co-parenting behaviors. Results suggest that the program effectively improved participants' co-parenting knowledge and ability to use behaviors such as understanding and supporting children in developmentally appropriate ways, enhancing communication skills, and developing parenting plans. In examining group differences, we found that parents of infants and toddlers benefited the most from the program. Suggestions on program development and evaluation are discussed.