Background and Purpose: Mechanical Low Back Pain is a common musculoskeletal disorder which interfere with quality of life and work performance. There is no specification of which exercise has to be followed according to patient requirement. Mckenzie protocol has been prescribed in past few decade in a large scale even the Back School Program. But there is no proper clarification of which exercise has to be given in Back School Program apart from ergonomic advice. So the purpose of study is to compare the Mckenzie protocol and Back School Program in mechanical low back pain individual. Method : 35 subjects randomly assigned into two group – Group A Mckenzie protocol and Group B Back School Program. The baseline variable for pain intensity is VisuaAl nalog Scale and functional limitation is Modified Oswestry Disability Index were taken on 1st, 12th and 21st day of treatment session for 3 week of duration. Result: Using one way ANOVA there was significant improvement in Visual Analog Scale and Modified Oswestry Disability Index score for both groups.But unpaired t-test did not show any significant difference in exercise program between groups. Conclusion:On statistical basis there is no significant difference in Mckenzie protocol and Back School Program exercises, but patient felt better relief in their functional limitation by following Back School Program exercises.

Key words: Mechanical Back Pain; Back School Program; Mckenzie Protocol; Modified Oswestry Disability Index.