A comprehensive evaluation-based system for quality assurance was developed at the Medical Faculty of Freiburg during the course of several years. The system comprises the following levels:Level-I: Annual summative evaluation of the entire curriculum (academic years 1 through 5 and separately the Practical Year). The primary goal is a deficit analysis of the teaching quality of the several disciplines, thereby mainly referring to structural parameters.Level-II: Formative evaluation of the several courses/lectures with emphasis on didactic parameters. It allows a more detailed analysis of the quality of teaching. Especially those disciplines are examined that are identified by the level-I-evaluation as being in need of improvement. The intention of any form of evaluation is its use as an instrument for optimising the teaching quality. Therefore transferring the evaluation results in measures improving quality is resolutely pursued on all levels of evaluation.