Peter Thiel is unlikely to be persuaded by a recent OECD survey which found that:

during the first two years of the global economic crisis, in country after country, people with a tertiary (higher) education were much less likely to be unemployed, much more likely to be participating in the labour force, and more likely to have higher earnings, compared to their less-educated counterparts.

And in chart form:

Which reminds me: must sort out that MSc.

Related:
Education Indicators in Focus (January 2012, PDF) – OECD
Why Peter Thiel Is Wrong To Pay Students to Drop Out – Forbes
Meet the College Dropouts – Inc.