About Your Sexuality, or AYS, was a comprehensive sex education course published by the Unitarian Universalist Association in 1970, with further revisions in 1973, 1978 and 1983. The course materials were originally developed by Deryck Calderwood. Although made available to other organizations, the materials were primarily used in courses taught to youth ages 12–14 (in mixed-gender groups) in Unitarian Universalist congregations.