Continuity mistake: A party that is in full swing when Miss Brodie enters another room for her final confontation with Sandy has dispersed when she leaves only a few minutes later.
Continuity mistake: In the first classroom scene, Miss Brodie is talking to her students. She approaches her desk, places her hands on her desk and turns around, all the while talking and keeping her hands on her desk. In the next shot her hands are off her desk, folded.
Continuity mistake: The windows in Miss Brody's classroom seem to have minds of their own. The one she admonishes a student to lower to six inches closes itself completely a few shots later. Another, in a later scene, reduces the amount it is open by several inches between takes.