Yep,and those Chinese who are doing the screening should be screened in advance too.The problem is that it's hard to find suitable Chinese screeners because their screeners have been bad screeners.And so it goes on,ad infinitum!
Another glaring problem is textbooks.Those that are chosen are often unsuitable for students because they are too difficult for them.Not enough attention is paid by deans to choosing suitable textbooks for their students.Maybe the dean wants students to be so immersed in their studies that it slips their minds to complain about their teachers,Chinese and/or foreign!
You're right to flee from a situation where you can't make a positive difference.Maybe your words will not fall on deaf ears at the new place.But Chinese will often say 'yes,yes',followed by chsnging nothing!