Parents face a multitude of challenges related to knowing, understanding, and implementing various approaches to managing challenging behaviors of childhood. The literature on parenting identifies several areas which influence a parent's capacity to handle challenging behaviors. Understanding of child development, establishing household rules, developing awareness of one's own parenting style, and having the capacity to establish meaningful relationships are key factors involved in parenting. Parenting programs such as the Incredible Years Parent Training Program (IYPTP) specifically address key factors to improve parenting skills and parental competency. This study examined changes in patterns of various aspects of child behavior and participation in the parent education program IYPTP. Ninety-seven participants engaged in a 14-week program designed to provide education, support, and training in parenting using the IYPTP curriculum. Participants assessed their children's behavior with the Eyberg Child Behavior Inventory (ECBI) at the beginning and end of the program. A nominal group process (NGP) was also used to gather qualitative data about parental competency as well as the benefits and limitations of participation in IYPTP. Overall results showed a significant decrease in the intensity of disruptive behaviors as assessed by the ECBI. The nominal group process identified relationships with facilitators, development of household rules, and increased sense of parental competency as benefits of participation in IYPTP.