This article reports results derived from the national study of Grade 5 in Vietnamese primary schools in which teachers and pupils took tests in reading and mathematics. The test data were calibrated so that teacher and pupil results could be mapped onto the same continuum. Results showed that the overlapping tests for teachers and pupils were appropriate for the pupils and easy for the teachers. Fit to the Rasch model indicated that the sets of items in both the reading and mathematics tests were each measuring a single domain. Teacher performances were predictably higher than those of the pupils. But there was a considerable overlap in scaled scores indicating that many Grade 5 pupils were out-performing a sub- sample of teachers. Of great concern were the analyses of aggregated results at provincial level. It was clear that the distribution of teacher competence in reading and mathematics was related to location of the provinces, and alarmingly so too was the distribution of pupil competence. The relationship between teacher and pupil competence was linear and indicated that pupil chances of improved learning were strongly linked to the competence of the teacher.