In this study we investigate the influence of ethnic differences on student motivation when learning from formative feedback. Interpersonal teacher behavior and student motivational needs are used to explain the effects of assessment for learning on intrinsic motivation by comparing students from different ethnic backgrounds. The final study's sample consisted of 558 students from Dutch secondary vocational education. Multi-level structural equation modeling was used to test possible models. Our findings show that modes of feedback (monitoring, scaffolding) and teacher interpersonal behavior are strongly related to predictors of student motivation. In line with self-determination theory, our findings indicated that competence and relatedness mediate the effect of feedback (both monitoring and scaffolding) on motivation. Multi-group analyses showed only small differences for ethnicity, especially in relation to mode of feedback, which led us to conclude that, irrespective of the "Immigrant Paradox", assessment for learning may facilitate feedback provision for both immigrant and native Dutch students indiscriminately, thereby enhancing motivation to learn. Implications of these findings for learning in classrooms are discussed. (Contains 3 tables and 1 figure.)