This study has examined the relationship between student´s grades in Physical education and self-assessed health and level of physical activity. In this way some of the subject´s aims has been examined. Students should, through the subject, develop knowledge and skills that enable them to take an active responsibility for their health and physical activity throughout life. A quantitative method were used where students at the upper secondary school have taken part in a survey. The results from the study were analyzed using the cultural sociological perspective as well as curriculum theory. The results show a positive relationship between student´s grades in Physical education and self-assessed health as well as level of physical activity. Relationships could also be seen between student´s grades and if they state that they make active choices regarding their health and physical activity based on knowledge and skills learned in the subject. The relationships indicate that the teaching lives up to the researched aims. However, the results also show that the answers from many students indicate that the teaching in the subject does not live up to the researched aims. The results can thus be interpreted in two different ways.