I'm AIBU more for voting!
DDs surname is spelt wrong on her school report. This is likely due to Autocorrect as our surname is one letter different to a very common word... of which it is also a homophone. It is a common problem.
If we mention it to school it wouldn't be a complaint, more an awareness to double check on things as she has been upset previously if she's received awards/certificates with the incorrect spelling.
YANBU... bring it to schools attention
YABU... leave it.