An optimum fit between high school and university curricula is one of the best precursors to a higher chance of graduation. This especially applies in the STEM fields, where up to today many students drop out in the first semesters. MINT-L4@RWTH seeks to use its didactic competence in the STEM area to contribute to the enhancement of graduation quota in all programmes at RWTH Aachen University. For this purpose, it co-operates with ExAct, CiL and the docents of the different fields. Adding to this, there are facultative bridge courses which are scheduled before the beginning of semesters, and which offer an ideal preparation to high school graduates for studies in STEM areas. These activities are also supported by didactic research and development, conducted in PhD projects.