This article reports on the first 2 years of an ongoing project that examined the efficacy of a 10-hour dementia training provided to entry-level personal care aide (PCA) trainees from the Hispanic, White, African American, and Asian communities in New York City. Participants were enrolled in a 90-hour PCA training program offered by the New York City Department for the Aging and were either recipients of public assistance, displaced employees from September 11, or recent immigrants to the United States from China. Classes were conducted in Spanish, English, and Mandarin/ Cantonese. An 11-item Knowledge of Alzheimer's Disease instrument was developed for the purposes of this project and administered before and after the dementia training and at 3 months following graduation. All groups, regardless of language, showed a significant increase in knowledge of Alzheimer's disease at the conclusion of the training and retention of this knowledge at 3 months follow-up. Age was strongly correlated with an increase in knowledge, while gender and education were not.