The purpose of this study is to find out the effect of a 4 week Yoga program on school students on their attitude towards Yoga. The subjects chosen for the study were 50 students studying in class 9th and 10th of a Govt. High School of Chandigarh. Their age ranged between 13 to 15 years. The experimental group consisted of 25 students (male-14, female-11) who underwent a scheduled common Yoga protocol for a period of 4 weeks, 6 days/week whereas control group consisted of 25 students (male-14, female-11) who were given no treatment. The attitude towards Yoga of subjects was measured by Yoga Attitude Scale developed by Dr. Mahesh Kumar Muchhal. The attitude of students towards Yoga was measured after 4 week Yoga program for both experimental and control groups. The result of the study revealed that there was a significant difference found between experimental and control group (*p<0.05) on their attitude towards Yoga. Furthermore, there was no difference found between male and female subjects of experimental group and male and female subjects of control group (p>0.05).