In The Netherlands, workplace learning consists of 40% of initial teacher education. The main activities in workplace learning are the training of teaching skills and assignments for the teacher education institution and school. But five Professional Development Schools (PDS) we – teacher educators at the University of Applied Sciences in Rotterdam - work with also saw possibilities to provide more theoretical subjects, like adolescence psychology. At our teacher education institution this subject is quite theoretical, with a number of lectures, a handbook, and an exam. We lacked an important goal of the course: that the students should be able to use the knowledge about 12-18 year olds to improve their relationship with them. So we decided to redesign the course with a team of four university-based teacher educators and nine school-based teacher educators into a work-based learning assignment.