The problem with uneducated parents is that they are still very valuable for the children in terms of emotional development. The problem however is, that they tend to make critical mistakes which sometimes affect the children's development.
And to bridge those two aspects, this 'high-quality' school model might be a very good answer.
Just to be clear: Not all uneducated parents are the same and some of them might be very good parents, its just that the probability of finding problematic behavior is much higher for uneducated parents.