Cost of education

I recently saw this interesting graph from The New York Times, which shows the cost of education in the U.S. way, way, way outpacing everything else measured in terms of inflation.

I wonder how that steep education line breaks down? K-12 versus university? Cost of tuition versus books? I've taken a quick peek at the U.S. Bureau of Labor Statistics, but nothing is immediately jumping out.

It's frightening that education, one of the great levelers of inequality, seems to be rapidly becoming a means of generating debt, not wealth.