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<blockquote> <p>I can understand why teens pose questions on college forums regarding the physical attractiveness of the students on different campuses (immaturity, shallowness) - but why in the world do some "informal" college guides have such ratings?<<</p> </blockquote>
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<p>You answered your own question. The guides have these ratings because teens pose the question in the first place. They want to sell as many guides (or get as many on-line clicks) as possible, not only to the serious students but the shallow and immature ones as well.</p>