Given today's, informational and accelerated times, people are aware of the importance of sport and its essential factors for the health of children and adults. It represents a general human good, and when it comes to children, play and sport should be an essential part of their lives. Children should be encouraged to engage in sporting activities as early as possible since, apart from the fact that sport is extremely important for health and development, it helps children gain knowledge, skills and working abilities, and also has a very important role in society. Through sport the y shape their social skills, acquire the discipline necessary to function in a particular group, develop tolerance, work habits and team spirit. Basically, it can be said that children through sports are getting a lot of positive features that greatly support them in further education and training. Within this graduate thesis, a study was conducted to examine whether there is a correlation between school success of students who are actively engaged in sport compared to those who do not deal with sport. The results of the research has shown that there is a statistically significant correlation between students who are actively involved in sport and school success, it is obvious that sports-related students have better success. Also, research has shown that there is a statistically significant difference between athlete's attitudes towards the importance of sport in relation to nonathlete students. Sports-related students give greater importance to the sport, but it is interesting that the vast majority of non-athlete students think that they are starting to engage in some sport soon.