The author used confirmatory factor analysis to examine between-domain relations of self-efficacy, task-value, and achievement goal orientations among 424 Korean middle and high school students. All motivational constructs demonstrated strong subject specificity in both age groups. Strengths of between-domain associations differed substantially by individual constructs. Performance-approach and performance-avoidance goals were highly correlated across domains, whereas task-value and mastery goals were more distinct across domains. Self-efficacy perceptions were moderately correlated across subjects. Hi-h school students' academic motivation was more differentiated than that of middle school students. Within-domain interrelations among these motivation constructs were generally consistent with previous research. More important, consistent patterns of relations were observed in four different academic domains within each age group.