Transparency about all past internships, their expectation and accomplishments: http://bjk5.com/post/36067210182/khan-academy-internship-sum... http://bjk5.com/post/8826207372/khan-academy-internship-summ... http://bjk5.com/post/15500332273/khan-academy-internship-fal...
Transparency from previous interns about their work, which I believe speaks for itself: http://david-hu.com/2011/11/02/how-khan-academy-is-using-mac... http://dylanv.org/2012/09/14/the-khan-academy-internship-exp... http://jamie-wong.com/2012/08/22/what-i-did-at-khan-academy/
If any piece of evidence from the above points to an organization that values quotas over excellence in interns and the work expected of them, well please raise the alarm.
We need to get past our default response being a knee jerk assumption of discrimination.