Body Mass Index (BMI) is one of the most important indicators of growth, especially in childhood that can influenced by many socio-economic variables. Using a stratified sampling, we entered 375 primary schoolchildren in the study. Our required information were collected through validate and reliable questionnaire. We also measured the students’ height and weight. The data were analyzed by SPSS software. Comparing the respondents’ BMI with the standard percentile, all the samples were in the standard range. There were significant associations between BMI and age of the children, mothers’ educational level and job, and family income (P<0.001). The socio-economic variables may correlate with the children’s BMI via its impact on life style of the family.

Keywords: Body mass index, Student

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