Article here.

^...school officials admit they watch close friendships carefully for adverse effects. "When two children discover a special bond between them, we honor that bond, provided that neither child overtly or covertly excludes or rejects others," said Jan Mooney, a psychologist at the Town School, a nursery through eighth grade private school on the Upper East Side of Manhattan. "However, the bottom line is that if we find a best friend pairing to be destructive to either child, or to others in the classroom, we will not hesitate to separate children and to work with the children and their parents to ensure healthier relationships in the future." ^