Early adolescence (e.g., 10-14 years old) is a time during which health habits and behaviors first develop that carry over into adulthood. This age range is also a time when changes are often first observed in typical sleep patterns, such as a delay in bedtimes, decreased total sleep times, and increased sleep problems. Electronic media and social networking have become essential to adolescent interpersonal communication and are negatively associated with adolescent sleep. Room and/or bed sharing practices and having a parent-set bedtime are still common in this age range, though no study has examined the relationship between these culturally influenced practices and the sleep of racially/ethnically diverse early adolescents. The current study examined if differences exist between 1272 Caucasian, Hispanic/Latino, and African American early adolescents (ages 10-14 years) on self-reported bedtime, SOL, TST, and sleep efficiency, and whether these differences persist when taking into account presence of electronic media in the bedroom (i.e., TV, videogame console, computer, cellphone), media use at bedtime (i.e., watching TV, playing video/computer games, social networking, texting), room sharing, and parent-set bedtimes. Preliminary results showed that females reported worse sleep than males (i.e., longer sleep onset latency, shorter TST, and lower sleep efficiency, with a trend for having a later bedtime), and that African Americans and Hispanics reported later bedtimes than Caucasians, Hispanics reported shorter sleep onset latency and longer sleep efficiency than Caucasians, and African Americans reported shorter total sleep time than Caucasians. Presence of any type of media in the bedroom or use of any type of electronic media at bedtime was associated with later bedtimes and shorter total sleep times, but not with SOL or sleep efficiency. Parent-set bedtimes were associated with earlier bedtimes, longer sleep onset latency, longer TST, and lower sleep efficiency. After controlling for significant bedtime factors, only the main effects for TST became non-significant, while the interaction became significant. Hispanic females reported shorter TST than Hispanic males, African American females reported shorter TST compared to Caucasian females, and Caucasian males reported shorter TST compared to Hispanic males. Intervention strategies such as parent education and sleep education in schools targeting the bedtime behaviors and sleeping habits of adolescents are discussed.