[cudder]

I always felt like the teaching method in primary school was very much like "no pupil left behind". Teachers really tried their best to keep everyone up to speed on what they taught. If you were a huge troublemaker or just couldn't keep up with the (slowish) pace you would get moved to a special class where you would get more attention (even smaller class sizes) and wouldn't slow the rest of the group down.

As a "smart kid" it sometimes felt like waiting for everyone in class to grok something before moving on was a waste of time and that personally I'd learn very little, but ultimately I think it worked very well to ensure that everyone was on common ground.

At some point it was deemed that the current system wasn't inclusive enough so the special education for the troublemakers was gutted and they were put back into regular classrooms. At the same time, due to lack of funding and lack of teachers, class sizes ballooned from <15 to up to 30 or even 40 students per class in larger cities. I think there's some critical point where that system breaks down and now we're past it. The teacher has too many students to make sure everyone is up to speed, and giving too much individual attention in such a large class wastes everyone else's time.

Immigration has also played a role I think. Finland used to be quite monocultural, but that has changed. There are now more and more students who speak Finnish as their second or third language and as such have trouble keeping up. I don't think the solution is to stuff them into their own schools either as that promotes segregation and makes integrating into the society as an immigrant harder, and I don't pretend to know the perfect solution (if one even exists), but one thing's for sure: the Finnish school system was 100% unprepared for it.

[bombcar]

The solution is almost always more teachers (though at some point you have two teachers per kid and that’s likely to be excessive).

A class of five can handle darn near anything; a class of fifty needs everyone to be as nearly identical as possible.

You can artificially increase the number of “teachers” by combining classes of different grades sometimes. 12 year olds can do great assisting 6 year olds.