Recently I've been getting emails for a class reunion for a boarding school I attended for one year in Japan, from 1967 to 1968.
The mailing list includes everyone who went there who is still alive. Some of the people write in, some don't. The ones who do seem to feel quite nostalgic about the place.
I don't have fond memories of either the secondary school I went to for four years, or my college. I can't quite figure out whether I feel fondly about that boarding school, though.
It's been almost half a century since I went there, and it seems both more and less real for that reason. More real just because I was a very impressionable 13 when I went there, so the memories are more vivid. But it also seems less real, simply because so much time has passed, which makes it more a memory of a memory.
I suspect pretty much everyone who reaches a certain age feels the same way (even if most people have fonder memories of their school years than I do).
The next reunion is this summer. But it'd be weird, and discombobulating, and probably a little depressing, to see a bunch of old people you knew as 14-year-olds.
So I'll pass.