Staying off topic ;-)
The playing field needs leveling before the children even hit school. Maternal nutrition during pregnancy is a biggie. Years ago the Montreal Diet Dispensary gave milk (and other food? I forget now) to poor pregnant women to improve baby weight, and it worked. The babies were born healthier. A baby born mal-nourished is off to a rocky start.
So adequate food if a woman is pregnant, vitamin supplements (folic acid is soo important for neural development). The baby box supply I read about that one of the Scandinavian countries has, so every baby goes home with basics. For me basics includes some board books for parents to read to baby. If they start that habit maybe it will keep going as baby gets older? Parents reading to children is very important for future learning.
Bring back home ec and shop in schools but turn them into a "basic life skills" class that everyone takes. So basic nutrition and how to cook get covered, how to mend clothes gets covered, doing laundry gets covered, basic home repairs and projects get covered. We assume kids learn these things at home, but when I was a Cub leader (kids 8-10) it was amazing how ignorant the kids were, and this was in a middle class area. I would make it mandatory in all schools, let the kids from rich families learn there are basics that everyone should know, as well as the poor kids learning skills their parents may not have the time and energy to teach them. Plus boys learn "girls' jobs" and girls learn "boys' jobs". Everyone should be able to shop for and cook a meal and clean up afterwards, and then put up a shelf (level, not sloped) and fix the flapper on the toilet.
I've always liked this Lazarus Long quote: A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.