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Saw in another post about this a rather nice chart... which showed a massive jump in grades in the late 1960s/early 1970s... From what I recall from an article I read forever ago, it had to do with the draft deferments and keeping kids in school....
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“IN MY EXPERIENCE, SUSAN, WITHIN THEIR HEADS TOO MANY HUMANS SPEND A LOT OF TIME IN THE MIDDLE OF WARS THAT HAPPENED CENTURIES AGO.”
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