no, native american does not equal in. i know more natives that got turned down than those that are in my class. i think it's important to remember that each person is evaluated in the context of his or her situation. natives might get a little help in the admissions process, but that doesn't mean that they're any less qualified to go here. compared to everything else in the application, ethnicity is a very, very small part. by no means is it an "automatic in" card. there IS no one way to get into Dartmouth.
the native american presence on campus is fantastic. if that's what you're looking for, by all means apply here