To some extent, this type of affirmative action seems like it is being applied to admissions at Canadian med schools,
http://www.theglobeandmail.com/news/national/time-to-lead/failing-boys/part-5-is-affirmative-action-for-men-the-answer-to-enrolment-woes/article1766432/page2/,
and maybe more generally to various programs at North American universities.
From the second page of the above article:
The notion of a stealth policy of affirmative action for men is not new. It first surfaced south of the border in 2006. That year, the dean of Kenyon College wrote an op-ed in The New York Times lamenting that she had to pass over “glorious stacks of girls” in favour of less qualified boys in order to keep some semblance of a gender balance at the school.