Grounded in Hoover-Dempsey and Sandler's parent involvement process model, the Realizing the American Dream (RAD) parent education program targets Latino parents' involvement beliefs and knowledge to enhance their involvement behaviors. Comparison of more than 2,000 parents' self-reported beliefs, knowledge, and behavior before and after RAD revealed large effect sizes for knowledge, moderate gains in involvement behaviors, and modest changes in beliefs. Postprogram behaviors were predicted by postprogram knowledge and beliefs, prior behaviors and beliefs, and family income. Observational data from 3 sites showed that RAD was implemented with fidelity. Implications for school practice and promoting Latino parent engagement are discussed.