The graphics don't help clear things up, either. Showing the growth rate over time is interesting, but only if you also show the percent of kids in each camp. It's not immediately obvious whether homeschooled kids are 2%, 8%, or .2%, from looking at the charts (and even doing a ctrl-F on "percent").

It's kind of embarrassing that this article doesn't once mention the rough percentage of students that are being homeschooled.