En una audiencia pública en una comisión de la Cámara de Representantes en USA, el 23 de abril de 2008, el investigador Dr. Stanley Weed informó sobre sus investigaciones en programas de abstinencia. Presentó evidencia sobre la buena eficacia de los programas de abstinencia. Se puede encontrar su testimonio aquí: http://oversight.house.gov/documents/20080423114651.pdf

"It should be noted here that critics of abstinence education cite several recent reviews of abstinence education studies that found no positive impact on teen sexual behavior (Kirby, 2007, Kohler, et al., 2008, and Underhill, et al., 2007). Most of the studies included in those reviews occurred during the first decade of federal abstinence funding at a time when abstinence education programs and program evaluation was still in its infancy. There was a lack of research -both quality and quantity- in this first decade of abstinence funding. This trend is changing, and unfortunately none of those cited reviews included the recent abstinence evaluations we refer to in the preceding paragraphs. These recent studies render the previous reviews and their findings somewhat outdated and not representative of the state of the science of abstinence research."

Además, vea caso de éxito de la secundaria pública chilena que se centró precisamente en promover la castidad (Cabezón et al., "Adolescent pregnancy prevention in a Chilean public high school", Journal of Adolescent Health 36, 2005).