According to an article on the German news site Spiegel Online, the Second Legal State Examination is one of the hardest exams worldwide:
Denn das zweite juristische Staatsexamen gilt als eine der schwierigsten Prüfungen der Welt. Gut jeder fünfte Referendar scheitert im ersten Anlauf.
The Second Legal State Examination is reckoned one of the most difficult exams worldwide. Almost every fifth trainee fails at the first attempt.
Every fifth, ok, so 80 percent pass. I think many candidates here would be highly pleased with that quota.