Cluster analysis procedures were used to classify 257 5th- and 6th-grade students on the basis of their mastery, ego, and work-avoidant goal orientations. The results identified 3 clusters of students with different achievement profiles in science. Students who exhibited a pattern in which mastery goals were stronger than the other 2 goals, showed the most positive achievement profile. In contrast students who were high on both mastery and ego goals did not perform as well academically; students low on both mastery and ego goals showed the most negative achievement profile. Additional analyses revealed that the cluster analysis provided a more distinctive and internally consistent set of findings than did pattern analyses that were based on median split procedures.