Not really. There are only so many hours in the day. The time between school and bedtime is extremely limited and involves other time consuming activities such as after school sports and eating dinner.
I work on homework with my kid every day and after all those things it's not like we have time (or she has energy) to fill in holes in her at-school learning
Next time you're in the car, try teaching your kid about solving systems of equations where both are linear vs one is linear and the other is parabolic. It's a lot easier to sketch it out on scratch paper than to pontificate from the driver's seat.
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.
I work on homework with my kid every day and after all those things it's not like we have time (or she has energy) to fill in holes in her at-school learning