Adolescents life is full of hopes. The adolescents are Eger to interact with a new experience to find out the relationship to examine the inner strength and explore the strength of inner ability. Sexual abuse is the biggest kept secret in India due to societal denial, ignorance and silence owning to the discomfort generated out of acknowledgment. Sexual abuse also referred to as molestation is the forcing of undesired sexual behavior by one person upon another. When that is immediate of short duration or infrequent. It is called as ‘sexual assault’. In this study, the pre-experimental one group pre-test post-test research design is used and nonprobability convenience sampling is used for selection of the sample, the sample is the adolescent girl of the selected school of Puliyangudi between the age group of 12-15 year of age which is 100 in number. A structured knowledge questionnaire is used to collect the data. The level of knowledge score regarding sexual abuse is (35%) poor, (68%) average 0% good in pre-test score and in the post-test score is 0% poor, 58% average 42% good. Hence the majority of the respondent had average knowledge in pre-test scores. After pre-test and post-test assessment of the level of knowledge, the significant difference between the pre and post-test scores was demonstrated by using the “t’ test and it was found that t= 39.1439. The significant difference between (P) is found between pre-test and post-test. After the planned program there was an increase in the knowledge of the respondent who are exposing to the planned teaching programme, the knowledge score of the students was improved. Hence the planned teaching programme was effective.