Courses follow the standards of TDI, PADI, DAN, EFR in English, German, Spanish. Teaching in French and Italian is very demanding for me, but I understand and speak enough to give normal briefings.
The indicated length of the course is no guarantee that you pass when you did the amount of training days. Remember in technical diving, you pay for the training days and not for the certification. I adhere to the same principle also for my recreational courses.