that's not germane to this conversation. it's about parents without formal teaching certs working with their children to given them what they need to excel.

Sure those things (history/philosphy/etc) matter but in our society you still have to do well on math tests to do well in life.

As a parent you can teach them directly (homeschool) or augment a public school education, but the augmentation route needs to be done in slack time, which is tough.