This is an exceptionally written and acted film--one that I strongly recommend. However, I warn you up front that it is often hard to watch because it deals with some very sad and pathetic people--particularly the lead, played by Michael Redgrave. The film is about the final weeks in a job by a long-time teacher at an upper-class British school. It seems that a sickly middle-aged teacher (Redgrave) is leaving and, unfortunately, his leaving isn't causing any sense of loss among the students or faculty. That's because long ago this teacher's spirit dwindled away--much of because he is locked in a loveless marriage. And, over time, his disappointment in love has been translated into a coldness towards his students. It's a fascinating but powerful study of a pathetic man--a man, who at mid-life, has come to realize that his life has been a waste and his wife could care less about him.
This is a wonderful film--and an interesting contrast to the old character from "Goodbye, Mr. Chips". While Chips was a bit stuffy, he adored his students and was beloved...whereas, with the character from this film Redgrave plays a man who is bitter and sad...yet by the end manages to keep some level of self-respect.
By the way, my wife hated that this film never really got to the heart of why the teacher and his wife were so cold towards each other. There is a scene that alludes, mildly, to perhaps him being impotent or perhaps even gay--but she needed to know this in order to love the film and was disappointed it was never revealed. See the IMDb trivia for more on this, by the way.