This study examined the psychometric properties of the Achievement Goal Questionnaire-Revised (AGQ-R) in a sample of Singapore secondary students (N = 1,171). Confirmatory factor analyses provided support for the AGQ-R in measuring the four achievements goals delineated in the 2 × 2 framework. Measurement invariance across ethnic groups was supported via multigroup analysis. Multidimensional Rasch analysis revealed that only one item on the instrument showed a slight misfit, and the distribution of items also matched reasonably well with students' achievement goals levels, though there were some students on the upper end of the continuum whose positions were not well-covered. Examination of the 5-point rating scale showed that while the response categories demonstrated monotonicity, two of the lower categories were not clearly differentiated. These findings suggest that the AGQ-R has adequate psychometric properties for use with school-aged students in Singapore, but a rating scale with fewer categories should be considered.