That's clearly not the only reason he was accepted. He's also:
-founded an international organization with hundreds of members
-has received stuffloads of awards for his activism
-founded a youth consulting firm
-worked for the o'malley presidential campaign
-was personally commended by the POTUS for his activism
-worked as an intern at the state department
-completed over 600 hours of community service over his high school career
-probably got a near-perfect or perfect score on his SAT
This guy has accomplished more in high school than lots people who have graduated from Stanford. He would have been accepted, probably on a presidential scholarship, even if he was a white male Christian from a millionaire family. In fact, this is bar-none the most impressive high school resume I have ever seen.