Introduction: The growth of children is a health indicator at each country and growth monitoring has a great importance. This study was done to Compare anthropometric indices of 13-15 year-old students with NCHS standards .

Method :In this cross-sectional study , 370 middle school girls in Hamadan selected based on cluster random multistage sampling . Data was gathered through questionnaire . To demonstrate the status of physical growth , weight, height and BMI was assessed and then it was compared with NCHS standards. The analysis of data was done through statistic tests ( Regression and T test ) by  using SPSS (16).

Results: The average weight, height and BMI was  48/25kg , 154/95 cm  and 19/60 kg/cm².The weight of 18/56% of students was below the 5th percentile and 3/7% higher than the 95th percentile.The height of 15/16% of student was below the 5th percentile, and 2/1% higher than the 95th percentile of the National Center for Health Statistics(NCHS), respectively Statistical tests showed significant relationship between family members , family income and consumption of creal with height and  also family income  and mother's working hours, with BMI.(P<0/05)

Conclusions: Because of  lowering of  height charts comparing to  NCHS standard we  recommend  health  promotion of parents and outhorities  in schools.