I have offered the idea for a couple of decades to get people to put their children into full day kindergarten at age 6 or 7...and then by middle school kids would be 14-15 so likely could go to the high school and transition accordingly.
More programs for infants (even expecting parents...and new people ages in utero, to newborn through their first year of life--outside the womb, to age 7 to allow more options for care and interaction among children and families and communities would be ideal.)
All of that should be free...and while that sounds 'impossible' large scale, plenty of towns