The purpose of this study was to explain the relationship between physical activity and academic achievement by exploring adolescent’s perceptions on physical activity and academics. This study concerns the relationship between physical activity and academic achievement. The main significance of this study is the connection of student’s perceptions to the relationship between physical activity and academic achievement in adolescents. It is believed no studies have used student perceptions to explore this relationship before. Understanding student’s perceptions on the role physical activity has on academic achievement can provide insight into developing programs to increase physical activity among adolescents. The questions raised in the study were broken into qualitative and quantitative questions. In the first quantitative phase of the study, adolescent’s physical activity levels and GPAs were reported, descriptive statistics were analyzed, and correlations were performed. The first research question was to determine if there was a statistically significant relationship between physical activity and academic achievement. Based on the correlation scatter plot performed in the first question, participants were selected and grouped into four extreme cases. For the second quantitative question experiments were conducted to determine if differences existed between high/low physical activity and high/low academic achievement for each of the Likert scale items on factors that influence physical activity participation, such as enjoyment and motivation. According to the qualitative responses out of the four extreme groups, 56.9 % of participants believe there is a positive relationship, 7.2 % believe it is negative, 24.8 % believe no relationship exists, and 11.2 % are unsure if there is a relationship.