Preparing youngsters for an aging society requires teachers who keep pace with health science research. The Stealth Gerontology[TM] program educates teachers regarding aging-related issues. The design and assessment of the program are reported in this paper. Teachers attended sessions including direct instruction and hands-on participation (e.g., laboratories). Sound educational methods were modeled through interactions with university researchers and lessons from the Positively Aging[R] curriculum, while highlighting aging topics matched to educational standards. Participants showed significant improvement (p<0.05) in eight of nine topics in multiple-choice pre- and posttests. Evaluations indicate a high degree of success.