Proponents of achievement goal theory typically posit social comparison to be associated with performance goals but not with mastery goals (C. Ames, 1992). Contrary to this postulate, there is some evidence that individuals who are experimentally induced to adopt mastery goals may also use social comparison (e.g., R. Butler, 1992). However, such laboratory studies do not take into account the reality of the classroom, where evidence proves that students can endorse both types of goals. This leaves open the question of whether mastery goals are associated with social comparison, even after controlling for performance goals. The purpose of this study was to examine this question. French junior high school students completed a self-report survey assessing their personal achievement goals (mastery goals, performance-approach goals, and performance-avoidance goals) and their social comparison orientation (SCO) at school. Findings indicated that both types of achievement goals were positively associated with students' SCO. Moreover, mastery goals were still related to SCO even after controlling for performance goals. Implications of the interplay between achievement goals and social comparison theories are discussed.