About 12% of children are enrolled in parochial or nonsectarian private schools. 3.4% of children are homeschooled as of 2012. The U.S. spends more on education per student than any nation in the world, spending an average of $12,794 per year on public elementary and secondary school students in the 2016–2017 school year. Some 80% of U.S. college students attend public universities.