Teacher collaboration is a key factor in improving school quality, professionalism and even health. However, these aspects are not sufficiently taken into account. One way to improve this situation is to implement cooperative behaviour from the very beginning, from teacher training at university level. This study shows how, with whom and why students collaborate at the university during their internship semester, considering a project at a German university for a Master's programme in education. The method used was qualitative interviews in which the students also pointed out the benefits and disadvantages of the teaching collaboration and whether they were satisfied with the dimensions they experienced. The results show that although there is a willingness to collaborate, there are many aspects to improve in order to make it really effective.
