AIBU or is the teacher being a cow to my child

[Chundle]

To cut long story short dd in year 2 has always loved school until this school year. Started saying her teacher hates her an didn't wan to go to school and crying etc. Anyway several times I have now witnessed dd trying to talk/tell the teacher something when she opens door in morning and teacher tuts, rolls her eyes or blatantly turns her back on my dd.
Had an incident before where she confiscated my dds shoes as she was swinging her legs under the table and last week dd was left out of an activity she had given her teacher 20p to participate in! I actually saw dd give etcher money at the door, teacher snatched it from pocketed it and looked the other way.
Other parents have commented that this teacher is rude to parents never mind the kids. Luckily we have got dd into better school for next term but AIBU to want to formally complain about her stinking attitude

Err... I'm saying it..?

Sorry tethersend. I should probably have said in RL " I have never heard a teacher say that what other teachers do is wrong."
On MN there are teachers who accept that everyone in their profession is not perfect. However I still think the majority tend to jump to the teachers defence and assume that it is the child at fault/lying whatever. In RL I have never heard one accept that a teacher can be in the wrong. I find this desire to protect bad teachers bizarre since surely they give the profession a bad name.