No description available.

No description available.

This work examines the learning outcomes of a French professional development program for science education in primary school, ASTEP. The program is based on a partnership between a primary school teacher on one hand and a subject expert on the other. Its uniqueness lies in the fact that the subject expert is a young university student who is challenged to be assessed on his/her learning for academic credits. Compared to most other professional development programs, ASTEP displays an alternative knowledge hierarchy, it is neither top down nor bottom up, but rather a form of knowledge exchange. Data on students´ and teachers´ reflections on the collaboration were analyzed through a grounded theory approach and subsequently organized within the interconnected model of teacher professional growth (IMTPG). Although the analyses indicated significant changes in the practice of the teachers, the learners who individually seem to benefit the most were the university students. The ASTEP program appears to provide a low stake high support scaffold for the students to refine their values and beliefs about a professional life and develop a professional identity.