Also not a knock on Americans. The US has many great things, but the education system isn't one of those. Sure, there are excellent educational and academic institutions in the US, but that alone doesn't make the country's education system great.
Switzerland has a great education system. There are almost no private schools because public schools do a great job. All universities are almost free and they are still among the top academic institutions globally (e.g., ETH). Furthermore, those who want to learn a trade early on can do apprenticeships combined with schooling instead of going to university and still have a great career. If they wish to go to university later, they can go to a university of applied sciences (Fachhochschule) or catch up on some requiremnts and go to a university.