Yoga not only helps to prevent and treat sickness but also helps to maintain the mental stability and concentration. Omkara chanting and Tratakakriyaare very importantYogic practices that have a positive effect not only on our physical health but on the mental health too.The objective of the present study was to see the effect of Omkara Chanting and Tratakakriya on the concentration of school students in Shimla. The subjects for this study were selected from Himachal Pradesh University Model School, Summer HillShimla.The study included 50 students who were chosen randomly. Yogic practices (Omkara chanting and Trataka kriya) were considered the Independent Variables and concentration was considered the dependent variable. The students' concentration level was assessed using a five-point behavioural scale developed by Brown and Holtzman in 1967 and revised by Malhotra and Rana in 2004. This scale (adapted version) has 25 items and a split-half dependability of 0.80.At the end of six weeks continuous practice, positive effect of Omkara chanting and Trataka kriya on the concentration level of the school students was observed. It is concluded that there is a positive effect at the level of concentration of the students who practice Omkara chanting and Trataka kriya regularly.