I've skimmed through this thread and I didn't see anybody mention The Children's Hour. It's a really good movie and a very different type of role for Audrey Hepburn. Also has Shirley MacLaine and James Garner so
Citizen Rules also recommended that movie yesterday:
I don't believe this one has been mentioned, it's a strong film, with good character development and story line.
The Children's Hour (1961)
The Children's Hour (1961)