Couple of interesting charts (and links) via Bruegel relating to the issue of human capital:
First, the flow of higher quality human capital across borders:
http://www.bruegel.org/nc/blog/detail/article/1483-brain-drain-gain-or-circulation/?utm_content=buffer04864&utm_medium=social&utm_source=twitter.com&%E2%80%A6
And international students participation:
http://www.bruegel.org/nc/blog/detail/article/1460-student-mobility-in-europe/
Very strong correlation in the above chart with quality of education system by country:
