Yep, standards for most public schools are crap / lowest common denominator. It's the constant "all outcome must be equal" issue that plagues so many people's thinking. Leftists seem to be incapable of seeing the difference between equal opportunity and equal outcome. And if they do, they prefer equal outcome apart from merit.
Personally, I'm exceptionally thankful for schools like my kids' school where my wife also works. The standards are high, they emphasize quality character traits in their instructions and are based on classical models for education.
EDIT: Lest anyone consider my comments to be in opposition to things like special education please note that is not the case (my wife teaches kids with special needs and I have a special needs son). I'm opposed to the dramatic reduction of educational standards as a whole that seem to be increasing (for a variety of reasons).