Introduction: In recent decades, deaths from CDNT increased three times in the Brazilian county.The objective of the study was to identify the prevalence of obesity and high blood pressure in the population of children and adolescents students of the county school of Ribeirão Preto/SP.Methods: A cross-sectional study was conducted with 505 children / adolescents, the age group 10-16 years who attended state schools in Ribeirão Preto/SP.Data collection was conducted through field research with visits to schools and interviews of selected students over the years 2013 and 2014.Anthropometric measurements (weight, height, waist, and hip) and blood pressure levels were measured for all participants.Results: Approximately 53% (n=265) of the students were male and 47 % (n 240) were female, with a mean age of 12.74 years.There was change in body weight in 30.9 % of the study population, and 18.22 % were overweight and 12.67 % were obese, with no statistical difference between genders.As for blood pressure levels, there was change to 8.71 % of the total population, being more frequent in the female group (4.95%).Children with normal BP levels admit spend less time off without energy expenditure compared with the amended BP [RP 0.92 (95% CI from 0.88 to 0.97)].Found a significant association [RP 2.02(95% CI 1.28, 3.2)] BMI changed and menarche before 10 years of age.Simple linear regression analysis showed a positive association between BMI and both systolic BP levels (R² = 0.2244, y = 61.1770+ 1,8228x; p < 0.001) and diastolic (R² = 0.3450, y = 35 2008 x + 1.0726; p <0.0001).For the other behavioral and eating habits variables, there were no associations between obesity and BP levels.Conclusion: There was a high prevalence of obesity and hypertension in this population.There was a positive association between BMI and SAH.For behavioral and dietary variables were few associations.There was an association for the occurrence of menarche before age 10 and the changed BMI.Was associated also to increased blood pressure and the free time without energy expenditure.Significant associations between high consumption of sweets, soft drinks and physical activity lower than recommended were found.It emphasizes the importance of developing intervention strategies with the participation of multidisciplinary team, including schools and family for the prevention and control of obesity and high blood pressure in children and adolescents.