Their ages
Even as a young girl watching this movie, I was always confused about their ages. The students are clearly about to graduate making them 17 / 18. And, all of Sir's teachings are about how they are about to become adults and enter teh real world. BUT, he also says thing like: soon you'll be interested in girls and very soon your main concern will be boys and marriage.
If they're already 18 -- they would have been interested in the opposite sex for years.
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