ABSTRACT: Most sexuality education curricula developed the past 20 years were not thoroughly evaluated. This study provides results from a content analysis of 10 sexuality education curricula for junior and senior high school students. Nine nationally available sexuality education curricula and one curriculum guide comprised the sample. The basis for analysis was the Guidelines for Comprehensive Sexuality Education, developed by the Sex Information and Education Council of the U.S. (SIECUS) and an instrument developed to measure bias in the curricula. Trained coders found that Sex Respect and Teen Aid addressed less than half the topics suggested by the SIECUS guidelines. Several of the curricula contained gender and sexual orientation bias. Certain key concepts such as “Sexual Behavior” and “Society and Culture” were not adequately addressed by most of the curricula. Findings indicate that of 10 curricula, only six are considered acceptable for educating junior and senior high school students.