Interesting... I've taken several electronics classes, and there was even a lot of "hands on" practice... BUT they never actually gave you soldering lessons!
Here we learn about soldering in junior high schools. I had electronic class for all three years when I was there, each session involved soldering in various activities. Of course it was only for simple purposes. Technical colleges have advanced lessons. I have friends who attend such college and they do not get any classes specific for soldering only. Looks like they assume all enrolling students must be able to do that already.
I know someone who teaches this kind of skill outside official institutions, though it is very rare to find one here.