Background: Pre-service training of treatment parents is a requirement for all foster care models to ensure safety and well-being of children in care. Researchers theorize treatment parents benefit more from enhanced pre-service trainings; however, no rigorous studies exist indicating the effectiveness of these trainings for treatment parents. Objective: This quasi-experimental study aimed to determine if an enhanced pre-service training developed for treatment parents (n = 71) is more effective than a basic pre-service training (n = 81) in increasing their parenting attitudes, personal dedication and willingness to provide foster care, and licensing rates. Secondary data analyses were performed on an archival dataset that included demographic information and training participant scores from three standardized measurements before and after pre-service trainings: Adult-Adolescent Parenting Inventory (AAPI-2), Personal Dedication to Fostering Scale, and Willingness to Foster Scale. Licensing status as a treatment parent at the end of the pre-service training was also available in the dataset. Results: Pre/post analyses revealed enhanced pre-service training participants experienced significantly more change in two parenting constructs, and basic pre-service training participants experienced significantly more change in one parenting construct. There were no significant differences between groups in changes in personal dedication or willingness to provide foster care. Enhanced pre-service training participants were significantly more likely to become licensed as treatment parents than basic pre-service training participants. Conclusions: The findings suggest an enhanced pre-service training may have potential impact on changing some parenting attitudes and an increased licensing status as a treatment parent.