One of the questions I get from non-homeschoolers is: How do you know if your kids are on track?
This question shows a reliance on the government to tell us what the "track" is. As Christians, we don't depend on the government to tell us what skills are and are not important. Not to mention the obvious fact that the government schools are failing miserably to stay anywhere near their own track!
I have two goals of our homeschooling:
1. to produce in my children a love of learning (out-schooling produces just the opposite as you well know)
2. to produce godly character in my children (out-schooling again aims at just the opposite)
Academics, while definitely a big part of our homeschooling, is really just gravy. If my kids hate learning and have no character, it doesn't matter one whit that they can use the Pythagorean theorem and quote Shakespeare. Academics alone do not produce success.
When someone asks if your homeschooled children are "on track", ask them what track they mean.