Outrageous sexism
Given how progressive much of the film is, it makes me cringe to see the scene where he starts to get the class into order by talking about how they should treat each other.
"The girls should be addressed as Miss, the men by their surnames" One of the boys complains that they all know the girls names so why not use them, to which Thackeray replies "Are there any girls here who don't deserve to be called Miss" - as if this is a killer argument for the discrimination he just proposed.
I could have let that go, but then immediately he said something along the lines of "The girls need to start behaving differently because you can't be sluts for ever, and only the worst sort of men will marry you if you are" (I know I'm paraphrasing horribly, but that was the jist of it)
Sometimes social attitudes just date films too much, and I fear that's the case here. There were loads of other lesser incidents that showed that sort of attitude too.
I felt it was a good enough film on the whole, but the sexism really got me down.