The reality is that many adolescents are engaging in sexual activity. It is also a reality that the rate of sexually transmitted diseases (STDs) is high and continues to be a major problem. What are schools doing about this continued problem and the rise in STDs? More specifically, what are Northern California high schools doing to address this problem? To answer this question a program evaluation was undertaken at Albany High School (AHS) in Albany, California, a small community in the East Bay area of San Francisco. The results suggested that the unit accomplished its goals and that the students' knowledge increased markedly from pretest to posttest. The mean change was significant. Additionally, the results revealed a significant association with ethnicity and STD knowledge. The finding was that Asian-American students increased their knowledge scores more than the African-American students, an interesting finding that definitely warrants more research. These findings are important because they highlight the need to better understand possible learning and/or motivational differences between ethnicities and aid in the development of a better sexuality unit for Albany High School, and possibly those in other high schools as well. The study provides recommendations for making the AHS unit more effective, along with general suggestions for others interested in developing sexuality units for adolescents. Recommendations for future research with regards to ethnicity, gender, and other issues that might affect student learning of sexual material are also given. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]