Background: Parents exert a significant effect on children's eating behaviors and physical activity levels, so it is imperative to find successful obesity prevention programs that target whole families in underserved communities. Purpose: To investigate the effects of a Coordinated School Health Program (CSHP) on parents in the program over a 2-year period. Methods: Parents of kindergarteners ("n" = 277) in 7 schools participating in a CSHP that served an underserved, predominantly minority community were surveyed at 3 time points regarding their nutrition and physical activity knowledge, attitudes, and behaviors (KABs). Results after years 1 and 2 were compared with pre-intervention results using t tests. Effects of socioeconomic variables were investigated using multivariate linear regression. Results: Reported unhealthy behaviors were lower at the end of both year 1 ("P" = 0.03) and year 2 ("P" = 0.04). Numerous factors were associated with changes in KABs in the parents, including parental gender. Discussion: A CSHP may have lasting effects on parental behaviors in an underserved, predominantly minority community. Translation to Health Education Practice: Future studies should assess the effects of CSHPs in other populations and which factors most significantly affect parental attitude and behavioral changes so that program content may be tailored accordingly.