Hang in there! Teachers are not all versed in what is typical of a gifted child. They are not always aware of potential knowledge gaps with acceleration and aren't always aware that this is totally normal, but not a concern as gifted children learn very quickly and can fill in any potential gaps easily.
I had a teacher say something along those lines to me that you were fed... If your child is as smart as you claim, then why did your DC forget his/her folder on the table last week? I felt like saying... I never said my child was perfect and not to mention... God Forbid I am able to find my keys every time I look for them! Does that imply I shouldn't be able to drive because I am not perfect? SHEESH!
Perhaps a group meeting and explaining that asynchronoous behavior is normal, as well as knowledge gaps, things might start to smooth out for you soon!
GOOD LUCK and don't let them get to you
