A total of eighty-nine percent of students were eligible for free or reduced-price lunches, an indicator of low socioeconomic status. Measures The survey contained multiple items addressing precoital behavior, sexual intercourse, and demographic characteristics. Only students who indicated participation in 1 or both of these precoital behaviors received items regarding sexual intercourse. Thus, the precoital items appeared to provide a valid and reliable strategy for avoiding overexposure to sensitive content in this age-group while collecting important information from those youth who were sexually experienced. The goals of the present study were to 1 examine the prevalence of vaginal, oral, and anal intercourse among a population of urban, public middle school seventh-grade students; 2 to examine the demographic characteristics of those youth who engaged in each type of sexual intercourse, and 3 to examine the sequence of initiation of the 3 types of sexual intercourse. Analytic Procedures Prior to analysis, 5 students were removed from the data set due to missing data regarding lifetime intercourse, and 23 students were removed due to small counts for a specific age ages 11, 15, and 16 leaving a total sample of for analysis. Parental consents were returned by To mitigate concerns from parents and school personnel regarding exposure of nonsexually experienced seventh-grade students to explicit questions regarding vaginal, oral, and anal sex, 2 precoital items were used to identify and screen for nonsexually experienced youth. However, public sensitivity regarding sexual behavior surveys among early adolescents, particularly in public school settings, has impeded this research. Prevalence estimates of condom use for vaginal and anal sex were computed only for students who were currently sexually active ie, reported having sex in the past 3 months. Unfortunately, due to the need to limit the number of items, questions regarding condom use during oral sex were not included. Previous studies among older adolescents report contrasting findings regarding the sequence of sexual initiation. These findings have implications for early adolescent school-based sexual health education.