Well, a combination of lots of things:
- Match list
- Friendly, collaborative atmosphere. Highly selective interviews, so you better believe each and every student here was chosen for a specific reason to add to the social and academic community. Administration seems friendly, approachable, and above all concerned about school/life balance, encouraging you to keep and pursue your passions outside of school and medicine.
- The most developed and robust concentration program of any med school I've seen. Emphasis on multidisciplinary and systems thinking. Big on medicine-humanities collaboration, social justice, and slightly left field aspects of medicine (Alternative medicine, mindfulness meditation and contemplative studies, integrative medicine)
- IMO, the breadth of clinical and educational experiences equal those of higher ranked institutions (a super extensive focus on research community was not a deciding factor for me personally, though Brown's is growing with tons of new lab construction underway). Seems like they don't really pay much attention to USN rank-climbing, and they look for students who feel the same way.
- That match list though
Ask me again in 6 months!