The argument of this article is that assessment in higher education in the professions can benefit from quality assessment tasks linked to professional practice. Such an assessment task would need to be authentic requiring considerable intellectual skill as well as attending to the realities of professional demands. The idea of authentic assessment is developed by using five of Boud et al.'s propositions in higher educational assessment. This idea is illustrated by the use of action research in a teaching internship, that is, data driven learning in the workplace which also serves as an assessment task in the final year of a professional Bachelor degree. Some difficulties and some illustrative, positive student reactions are presented.