It was designed to actually impart skill to the children. The guide says:
Once this hut is complete and properly staffed, children will tend to spend a lot of time here. When your tribe has an operational nursery school, a small fraction of
the knowledge of the teacher will be conveyed to each child in the tribe every hour. The more skilled the teacher, the more the children will benefit.
That is Arthur's intent for the school, so if it's not operating that way, we need to have a look.