The impact of bullying and sexual harassment on six health outcomes among middle school girls were compared to these outcomes among high school girls. High school girls experienced more bullying and sexual harassment and poorer health outcomes than their middle school counterparts, but the impact of these experiences was less among high school students. Differences in outcomes may be the result of better support systems and coping mechanisms among high school girls and/or challenging developmental changes during middle school. Sexual orientation, race, and disability had some notable relationships to bullying and sexual harassment experiences as well as health outcomes.