Background: Breast cancer arises from uncontrolled proliferation of abnormal breast cells, with potential for systemic metastasis and mortality if not diagnosed early. Although population-based screening through physician examination and mammography has been extensively validated, the efficacy of Breast Self-Examination (BSE) as a standalone screening tool remains inconclusive. While some evidence supports BSE, contradictory findings necessitate further well-controlled prospective studies. Nonetheless, prevailing literature advocates for BSE promotion pending definitive trial outcomes.

Objectives: To assess the level of knowledge score regarding Breast Self Examination among adolescent students in a selected school of Aizawl, Mizoram, and to determine the association between level of knowledge and selected demographic variables.

Methodology: A non-experimental quantitative research design was employed. A sample of 100 adolescent students was recruited using non-probability convenience sampling.

Results: Data analysis revealed that 73% of respondents had moderate knowledge, 19% demonstrated adequate knowledge, and 8% had inadequate knowledge of BSE. The mean knowledge score was 14.21 and SD was 2.6. Statistical analysis indicated no significant association between knowledge scores and demographic variables.

KEY WORDS: Assess, Knowledge, Adolescent, Breast Self Examination.