Not Shocking Today
Although it's well-acted, the reason the film doesn't hold up well today, or arouse much interest, is because it's quite dated in its outlook - if it were written today, the storyline would likely be resolved quite differently, possibly with the young man realizing that he is, indeed, gay and a "thanks, but no thanks" to the lady who offers to prove otherwise. As I recall, unlike play, the film told the story via flashback, with Tom apparently "straightened out" and looking back on his experiences at the school. Of course, they had to be careful because the Production Code was still very much calling the shots, which made it very difficult for Hollywood to legitimately film "mature" material such as this.
Deborah Kerr, John Kerr and Leif Erickson had played their roles on Broadway (the cast also included future TV stars Alan Sues and Dick York). "The Kerrs" (who were not related, of course) were replaced during the run by Joan Fontaine and Anthony Perkins.
"I don't use a pen: I write with a goose quill dipped in venom!"---W. Lydecker