The Nordic countries have the best schools in the world.
Private schools are banned.
Well except for Sweden. They introduced vouchers in the 90s and as soon as they did, their rankings started rolling like dung down a hill.
One advantage of the private schools is they can kick out students they cannot manage easily, while the public schools have to keep everyone. Some recent strutural changes in the public shools are said to have declined their quality, enough so that many government ministers, even of the left wing, are sending their children to the private schools.
I guess it's one of those Nordic myths -- like high minimum wage (there is none in Denmark).
they did that before too :) couldnt possibly expect the politicians to send their kids to the same filthy schools as the plebs now could we? :)