There are two types of instructor....those who think that they are there to "weed out" the weaker students and those who are there to actually train them! I could never really understand those branches with instructors who were very proud of their high "chop rate" - when I was an instructor I felt that my job was to pass people through the course if humanly possible and I considered it a failure for me as well as the student if I lost anyone. Most students needed a confidence boost while others perhaps needed the occasional "pull your finger out". In any event, it is horses for courses and the best method for the individual involved.