The purpose of this study was to investigate the relation between SOC, attitudes towards grades, and perceived stress levels among adolescents, and whether there was any difference in this relation between gender. The first research hypothesis was: "there is a gender difference to the degree of SOC, attitude to grades, and perceived stress level". The second was that "SOC and attitude to grades, predict stress in adolescents". To answer these hypotheses, a questionnaire survey was carried out among upper secondary students, 95 boys and 89 girls. The result of the analysis showed a significant difference between the gender. Similarly, that the degree of SOC predicts stress in adolescents was detectable. Further analyses revealed that this evidence was only detected among boys, after splitting the gender into two groups. These results partly support earlier research. The conclusion of this study was that there is a gender difference in degree of SOC, attitudes toward grades, and the perceived stress level. Moreover, that SOC and the attitudes to grades, predicts stress is rejected for youth as group, but confirmed for boys. The results were discussed by differences in gender and SOC, lack of validity, and finally lack of generalization.