IOSR Journal of Nursing and Health Science (IOSR-JNHS) e-ISSN: 2320–1959.p- ISSN: 2320–1940 Volume 2, Issue 1 (Sep. – Oct. 2013), PP 05-08 www.iosrjournals.org www.iosrjournals.org 5 | Page Knowledge and Opinion toward Sex Education among Selected Secondary School in Ejigbo Local Government Area, Osun State, Nigeria. B.L. Ajibade 1 , Olagunju,R.O. 2 , Oyediran, G 3 . Department of Nursing Science, College of Health Sciences, Osogbo. LAUTECH, OGBOMOSO. Abstract: Introduction /Background: This study was designed to find out the altitude of selected adolescents towards sex education in Osun State, Nigeria. It was designed to enlighten the adolescent on the problems associated with lack of sex education. METHODOLOGY This is a descriptive study using multistage sampling technique to select the 3 secondary schools in Ejigbo local government area. The respondents were selected using simple random technique through the register of the school. The instrument used was a self-designed questionnaire with reliability of 0.71 using spearman brown coefficient analysis. Three hundred (300) respondents were used for the study. RESULTS. Findings showed that, adolescents level of knowledge on sex matter was poor with a greater percentage (53%) affirming this. On the meaning of sex majority of respondent (60%) said it has to do with touching of body parts. CONCLUSION It was concluded that sex education should be adopted to avoid consequent of lack of sex education. Keywords: Knowledge, attitude, Adolescents, sex education. I. Introduction Sex is a word that so many youths in our society are not comfortable to discuss it. Early sex training among the youths is very vital because young people have the right to be exposed gradually to proper and responsible education on fertility awareness and ideas about sex education. Sex is seen as physical activity between two people in which they touch each other’s sexual organs which may involve sexual intercourse (Achilia, 2002). George (1999) in encyclopedia of education defines sex education as “the teaching of human sexuality and the state and function of being a sexual person and a way to helping children grow into adulthood without getting into sex related troubled” . The biological, physiological and physical changes in adolescents make them to ask many questions regarding sex and sexuality and many times, there would be no enlightened person to give an appropriate, answer. In some societies, discussing such matters is a taboo and in some cases, those who attempted answering, do it ha p-hazardly(Agujiobi,2003) Nwabuichic (2001) looks at sex education as an education which deals with instruction to develop understanding of physical, emotional are psychological phase of human relation as they are affected by male and female. Gold man (1999) stated that, “as long as a girl is kept in absolute ignorance of the meaning and importance of sex, she will not be able to take care of herself” so one need not be surprised if she becomes an easy prey to prostitution .” more (2000) asked,“why do we put more effort into teaching of history or religion and totally neglecting the historical evolution of human sex”. He went further to argue that just as we discuss how to cook, farm, read and write to our children, we should also endeavour to teach our children the revolution of sex. We should there for teach our children how we came into the world and the consequences surrounding it. Akindele (2002) criticized the theory of keeping children in an “artificial ignorance” in sex matters. She stated that, “The fact that a mystery is made about sex, there is naturally an increasing curiosity of the discourse on the subject”. Therefore, the best way to prevent the young people from being occupied in mind with sex is to tell them as much as they can understand it. She also asserted that parents should gradually and progressively scare their sexual experience and enlightment with their children, since the primary goal of sex education is to provide the individual knowledge and concept that will enable him to make informed and responsible decision about sexual behaviour at all stages of life. Agujiobi (2003) asserted that many youths today experience embarrassment after having been left in darkness from childhood and happens to stumble into the fact of life. Some girls attain the age of puberty