Have an alternate plan in place before you make any conversation with the teacher about improving the experience, lest she be crazy enough to feel offended and take that out on your DD.
Absolutely.
This (seriously) is
exactly what took place with my DD's biology teacher.
My DD was so horrified that she then failed to report additional bullying (?) within the class until much later on-- because she was afraid of what ELSE might happen if I intervened again.
Additional note, here-- this was a teacher that had the reputation among her colleagues of being "nice" and "caring" and "collegial."
But it was
crystal clear that such respectful and engaging interaction didn't extend to the brightest students in her honors class.
I did (gently) suggest that perhaps that was NOT a good fit for Ms. B(iology), ultimately-- that I was concerned about the tenor of that learning environment from a more global perspective, but that ultimately, I was drawing a line in the sand w/r/t my own child.
It's the one and only time in 8 years that I have EVER done that to the school. I think that they listened to me because:
a) I wasn't the only parent complaining-- in fact, I was among the more reasonable ones, since I didn't actually HAVE a lit torch or pitchfork...
b) I had a long history of being "easy to work with" for teachers
c) my DD was still doing (reasonably) well in the course material, in spite of fairly spiteful/subjective and capricious grading... about 93%.
If you can avoid escalation here, that will be best, I think... because you don't have a lot of those factors in your favor, from what you've said.
