In addition to what other people have mentioned, in my city, nearly all new builds are in decent to good school districts, while most houses over ~25 years old

In addition to what other people have mentioned, in my city, nearly all new builds are in decent to good school districts, while most houses over ~25 years old are in declining or already-bad school districts. If you deliberately set out to find a 50+ year old house in my city, the only options in decent school districts would be a handful of very old farm houses that've managed to survive the building of the suburbs, so you'd have to hope the ~10 of those that come on the market in a given year were something you wanted. There are some very nice older houses in the city, but the only people who buy those can afford both the house and private school.