Bill Nye Insults Homeschooling?

I had the chance to actually be in the moment when a homeschooler asked Bill Nye on his facebook page if he would ever consider creating a science curriculum for homeschoolers.  This was on a thread where Bill Nye asked his fans to submit questions he would answer:

"Bill Nye (the Science Guy) here, sitting by ready to take your questions (your good questions)..."

THE question:  "The homeschool community is severely lacking in real science curricula. Will you give thought to creating a science curriculum for the ever-growing number of secular homeschoolers?"

His response was less than stellar, in my opinion:

Homeschooling, Like Motherhood, Is Not a Sprint

As I mentioned, I get questions here and there from readers of my blog, fans of the IH facebook page, or posted in the IH support group.  Every now and then I get a question from someone that I think is a concern that is worth answering as a blog post on the chance that it may help others.  The topic for inappropriate discussion today is multi-faceted.  How can we know as homeschoolers that we are doing enough to teach our kids?  How can we know that they are learning what they need to learn?  How much worry is too much worry about whether it is going 'right'?