<p>^ Looking back at that list, the first 12 programs definitely stand out and are undoubtedly better than the others in terms of prestige, educational experience, and value for the future, though COSMOS and Perimeter ISSYP may also fall into that category. Of course, even within those 12, RSI, SIMR, COH, and NIH are far more selective than the others, but it’s worth applying to many of these programs despite the low prospects, since their applications are usually fairly straightforward (RSI’s is markedly longer/more time-consuming than the other applications, but after you finish one you can adapt/recycle essays, letters of rec, etc.). And chances are that if you apply to a few and are well-qualified you will get into at least one, if not more (though maybe not your first choice).</p>