In recent days, Korean society falls into disorder in sexual culture with transition of sexual consciousness by prevalence of sexual liberation trend through popularization of internet. Korean society, however, does not have essential counter-plans to cope with this disorder. In this paper, I investigated the realities about adolescent sexual consciousness, attitudes and behaviors around students in middle and high schools in order to propose educational courses for adolescent sexual problems. For the investigation, I made up a questionnaire and surveyed by 500 students in middle and high schools in a same area from 1st October, 2007 to 6th October, 2007 and I analyzed results from the survey. In the results, I found that males and the group having experience in acquaintance with the other sex reported more sexual consciousness. I also found that females and the group having no experience in acquaintance with the other sex reported more vestal consciousness.