That all the public schools I know in Europe, either directly or indirectly, are pretty much of the same quality (differences for specific teachers not withstanding).

Sending kids to a different school comes down to personal preferences, ranging from available languages to a school being along the commute of a parent or simple preference of tue kid in question. Selecting where to life based on school quality is simply not a thing I know. I do hear a ton of that from the US so.