Abstract: Child health has prime importance in all societies. School curriculum always emphasis on child proper health for all round development of the pupil. Lack of correct posture and negligence of good postural habits indulge postural deformity which indeed effect the body either structurally or functional. The purpose of this study was to find the prevalence of knock knee and bow legs deformity in school children. For this task a total of 25 subjects were selected randomly from different school ranged from 9 to 14 years of age. Methodology – to identify the deformities the inter - condylar distance for bow legs and inter - malleolar distance for knock knee was measured. Data was collected individually by performing the clinical test of orthopaedics. Mean score, standard deviation were applied for data analysis and interpretation. Conclusion – the mean score for bow legs was 3.38 and for knock knee 4.48 was reported. In the examined subject it was found that 32% of the subjects were having bow legs and knock knee deformity.