INTRODUCTION: Hypertension or high blood pressure is one of the major non-communicable health problems of 21st century associated high morbidity and mortality, global burden of which increasing day by day. Hypertension is a key risk factor for cardiovascular diseases which affects people silently all over the world. It is suggested that hypertension has its origin in childhood but goes undetected unless specically looked for during this period. Thus early detection of hypertension and its precipitating or aggravating factors are important if one is to evolve measures so that complications of hypertension can be averted. To estimate prevalence of Hypertension among Adolescent school students, to studyObjectives: distribution of blood pressure of adolescent school students according to age, sex and height and to identify the socio demographic and behavioral factors associated with Hypertension among school students. This was School based, epidemiological, observational Study wasMethods: conducted in two Government co-education secondary and higher secondary (H.S) schools in urban area of Patna Bihar. In Female Group,Result: 15(8.2%) students had SBP <90 mm Hg, 127(69.4%) school students had 91-119 mm Hg systolic blood pressure, 37(20.2%) school students had 120-129 mm Hg systolic blood pressure. In Male Group, 36(17.6%) students had SBP of <90 mm Hg, 93(45.6%) students had 91-119 mm Hg systolic blood pressure, 35.8%school students had SBP between 120-129mm Hg and SBP 2 male students was 130 mm Hg or more. In Female Group, DBP of 156(85.2%) students were between 51-79 mm Hg, and 27(14.8%) students had DBP of ≥80 mm Hg. In Male Group, 10(4.9%) students had DBP of ≤50mm Hg, 178(87.3%) students had 51-79mm Hg of Diastolic blood pressure and 16(7.8%) school students had ≥80mm Hg DBP. Findings of the study is expected to be of much help to the public health programme planner and manages to ne tune strategicConclusion: intervention for reducing non-communicable disease burden in the country.