This is a question I get asked quite a bit, and it is overdue for me to write about it. This will be a long post, and probably have quite a few iterations before it is finished.
I will answer the questions of why I decided to leave the USA and why I did not choose to live in other countries in separate posts, so if you are looking for that here, you will be disappointed.
The juvenile education system is highly regarded. I will not try to restate what is well-covered elsewhere.
Finns do not pay for education in Finland. Ever. Only students from outside the EU, EEA and Switzerland pay tuition. This is one of many reasons why it is reasonable to pay higher taxes. Rather than save up hundreds of thousands of dollars in order to give it to a private university with a multi-billion dollar endowment in the USA, or a nominally "public" institution with slightly lower fees (between $20K and $40K a year at present), I can pay my taxes, apply for citizenship, and send my kids to top universities for less than the cost of a bus pass.
Even those who pay tuition pay far less than they would in the USA. The maximum tuition rate in Finland is Helsinki University, at €18K/year, which is not too much more than a state resident pays for UMass and about half of what an out-of-state domestic student pays at UCLA.
Finland also considers homelessness unacceptable and has policies to eliminate it (https://www.theguardian.com/cities/2019/jun/03/its-a-miracle-helsinkis-radical-solution-to-homelessness). This is in stark contrast to the USA, which has a homeless population on par with Helsinki or Portland, Oregon.
Police in Finland rarely draw their guns and frequently kill no one for an entire year.
The Finnish prison system actually attempts to rehabilitate people.