Introduction. This study was conducted to compare the prevalence of trunk rotation in selected urban and countryside areas in Egypt. Methods. overall, 840 male students aged 10-15 years were divided into 2 equal groups: group A, representing urban schools, and group B, representing countryside schools. Both groups were first screened with the Adams forward bend test; then, the Scoliometer Hd application was used to determine the angle of trunk rotation. Children with a reading of 7° or more ( 20° Cobb angle) were referred to a medical facility and their parents were informed about the findings. Results. in group A, the Adams forward bend test showed a higher prevalence of trunk rotation (41.43%) than in group B (17.14%). The Scoliometer Hd application readings ( 7°) indicated a significant difference between the 2 groups: group A result was 12.61% and group B result was 5%. Conclusions. Male students of urban schools exhibit a higher prevalence of trunk rotation than those of countryside schools.