I tend to agree that you learn from each new instructor:
You learn which ones are the witches and which are the good ones.
I had this one psych instructor: I got LOCKED between the double "safety" doors for quite some TIME before the staff at the unit looked up to push the door release trigger to let me IN the locked psych unit!
Well, I tried to explain to this CI that I'd been on time, but locked/trapped between the doors - making it impossible for me to be on time...
She looked at me and said: "You are always late!!!". Well, all my nursing student "sisters" - knowing full well how paranoid I was about being late to clinicals KNEW I'd always be the first one to arrive at clinicals for about three years running.
They all burst into laughter! The instructor got all red faced and stomped out of the room!