This might be one reason for the low graduation rates at university in international comparisons, as well as for the small number of people who obtain an "Abitur" in the first place. However, several empirical psychological studies show that the grades awarded in Germany at school and university have a high reliability when taking up higher education and research jobs. The universities usually demand high grades in Diploma Thesis or a Master Thesis.
The low graduation rates at German universities, as well as the limited number of students who earn an "Abitur," might be attributed to this factor. However, numerous empirical psychological studies have shown that grades awarded in Germany during school and university are highly reliable when pursuing higher education and research careers. Universities typically require high grades for Diploma Thesis or a Master Thesis.