This contribution analyzes the participation and performance of Turkish students in Germany's education system—the country with the largest number of Turkish immigrants in Europe. As education is the main prerequisite for the successful socio-economic integration of immigrants and their offspring, the results are worrying. Turkish children find themselves in unfavorable positions throughout the different stages of school education, and their academic competences, as tested in international studies like PISA, are clearly below average. This is mainly due to the low socio-economic status and German language deficiencies of the average Turkish student. The German education system fails to provide adequate language training for children who speak non-native mother languages and shows a strong tendency to reproduce social inequality.