1 definition by YoMahMah

An elite, Ivy Preparatory League, New York City Private School. Comparable to the Horace Mann and Trinity schools amongst others. And is simply, the best of all of them. In fact, its pretty much the most hardcore school on the planet. Theres one in japan, too.
Gregory: I got into Dalton!
Janet: Oh, well you must be pretty damn smart.
by YoMahMah November 25, 2006
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