I'm glad they have good results with this system. I recall a teacher in my high school who was very unpopular with many students. He was an ex military man and what I am about to tell you will sound like a cliché: He believed in strict discipline, penalized students heavily for being slightly late or having corrections on submitted work, and so on. He actually invented a new form of punishment at the school involving hard physical labour. I don't recall anyone having a Hollywood epiphany when subjected to his brutal style, no wonderful breakthroughs or students discovering their hidden depths.

He would never have been re-elected by students. But was he a bad teacher? I don't know! I entered the school interested in the material he taught and left it still interested. Was he a bad teacher? Honestly, I have no idea. All I can say is that he was an unpopular teacher amongst many students.