The purpose of the study is to investigate the degree of performance anxiety that occurs in high school students who play sports. Sports and physical activity have a good effect on our body both physically and mentally. Health improves which can help us with everyday life. For high school students who play sports, it can be a lot with school and training at the same time, that you can feel pressure on yourself. That pressure can lead to stress and anxiety, which can negatively affect the athletes. In the study the research questions investigated the degree of performance anxiety in the sports high school students. Try to see if there is any difference in the degree of performance anxiety between girls and boys. If it differs from training and competition situations but also if there is a connection with stopping sports due to performance anxiety. We have carried out a case study and used a quantitative analysis method. There, a survey has been sent out and the processing of the data has been done with the help of SPSS. The results show that it is common to experience performance anxiety in connection with sports and it differs a little by gender. Girls are found to be more affected by performance anxiety than boys. It also shows that during competition, high school students are more affected by performance anxiety than training. The results also show that there is a connection between performance anxiety and quitting sports. The conclusion we can draw is that there is performance anxiety in high school students who play sports. They differ slightly between genders and occasions, depending on competition or training. If you stop your sport, we can see that performance anxiety can be a factor in students.