Sorry - I misspoke. I meant to say that there's no need to ask for a high school diploma as a qualifier to get into a graduate program - graduate programs require undergraduate degrees with very few (any?) exceptions. Even if the undergraduate degree did not in turn require a secondary (high school) diploma, the undergraduate program was itself a qualifier. The point is that in response to the main concept of this article that you don't need a high school diploma to get into many schools (MIT notwithstanding) is only relevant to undergraduate degrees, and even in that case, is not particular to just MIT.