Schools are a fairly recent invention, and at the onset they were meant for those children (from non-aristocratic families) who weren't getting home-schooled (a

Schools are a fairly recent invention, and at the onset they were meant for those children (from non-aristocratic families) who weren't getting home-schooled (and would otherwise in many cases have spent their days labouring among adults). Now the 'default' has shifted, from home to classroom schooling, for various reasons, but you seem to confuse this with some 'natural' state.