most USA public schools are this way as well, with the added bonus of them being funded primarily by property taxes of the locality in which they reside. So you

most USA public schools are this way as well, with the added bonus of them being funded primarily by property taxes of the locality in which they reside. So you have wealthy families buying homes in areas with nice schools, bringing up the real estate prices, which increases the funding of the school, which makes the school better, which attracts more wealthy families... etc