"Is Dartmouth's public relations emphasis on diversity too great? ... And why should it try to convince outsiders [that it is diverse]?"Because Dartmouth is better known for The Review than for the fact that it ranked 10th in Hispanic Magazine's Top 25 colleges for Latinos. (Dartmouth also ranked 47th on Black Enterprise's Top 50)
Because a lot of students at Dartmouth don't care where Dartmouth ranks on lists like those, and that is not a secret—to applicants or to students.
Because diversity is not just another column to compare against other Ivies; it is part of our mission, part of our reason for continued existence. If it's a commitment, it's a commitment, and we should goddamn well say so.