Several years ago, a preschool program was introduced across Bavaria for children with foreign cultural and linguistic backgrounds. It aims at supporting the early acquisition of the German language, and it largely depends on the cooperation between kindergartens and primary schools. This article first deals with the conceptual design of these so-called Vorkurse Deutsch.. It also supplies insights into the work of a research group in Regensburg that has designed a further training program for those who implement the Vorkurse. The article concludes with statements concerning the future development of these preschool courses, based on the experience gained so far.