A preceptor is REQUIRED to tell the student if they were doing something wrong (at least a competent preceptor would) at the first sign of mistake. And if the student is in danger of failing, a competent preceptor would sit down with the student ASAP, document that, and notify the school to track the student's progress.
A student should ALWAYS know where he/she stands by the halfway point of a rotation (if they were doing great/mediocre/struggling/failing).
And you guys need to relax. I highly doubt the OP would go into this appeals process calling his/her preceptor a bozo and demanding her to be fired. It's an internet forum
.
If the OP indeed acts like that in person, I'm sure there wouldn't even be an appeal process lol. Lack of professionalism is the first thing that would get you destroyed ANYWHERE, even in a classroom, let alone a rotation.