History and Objectives: Due to importance of scoliosis on body perception and their adverse side effects and in order to determine the its prevalence among high school students, the present study was undertaken among 11-15 year old male student in Ahwaz.

Materials and Methods: A descriptive study on 1033 students by multi-stage random sampling was carried out. Suspected patients were selected and clinical investigations were performed on the basis of radiographic and orthopedic findings. Type of curvatures as to compensative and non-compensative and structural and non-structural were determined. Prevalence was determined in the sample and population as a whole.

Results: Prevalence of scoliosis was 1.4% (CI=0.7-2.1%) and structural compensative scoliosis were 86 and 71% respectively.

Conclusion: Prevalence of scoliosis was in the sample under the present study was lower than the similar studies in other countries. Similar studies in other parts of the country and analytical investigations as to cause(s) of the disease are recommended.