Idiot blew his leg off

[Thumpalumpacus]

but the most important teachers any child has are mom and dad.

And how many kids have a "mom AND dad" these days? 
Lol
http://www.pewresearch.org/fact-tank/201...al-family/

Fewer than half of U.S. kids today live in a ‘traditional’ family

And even if they do you run into this phenomenon. 

http://www.bls.gov/news.release/pdf/famee.pdf

The share of married -couple families with children where both parents worked was 60.2 percent.

So if teachers are waiting for parents to pick up the slack they have a long wait because the 1960s are not coming back.

And how, exactly, are teachers to pick up that shortfall?

Never hammer nails with a fish taco. Schools weren't designed to pick up shortfalls in parenting; it stands to reason, then that rather than castigate the American educational "system", Mathilda should have criticized the feckless nature of some American families.

And both parents working is not an excuse ... A SAHM still isn't coaching her child during school hours. Family learning happens during family hours. Parenting requires commitment, as you well know.