Children learn and gain skill over time, not all at once like they did with the Chief's training in VV3. If your teacher has the minimum 'qualifications' to be a teacher, the children will not learn as much as they would with a highly skilled teacher. And yes, nursing moms only go to the school when you drop a teacher there.

Two builders are probably not enough to keep the stream unblocked overnight. We're still looking at how this is working, though.