This is bs imo. Yes an intelligence factor is measured, however it's only 1 intel factor. There's many others: Spacial, musical, intrapersonal.. etc etc Most of school only measures 2 out of many others. Ironic also that many inventors called school a scam, and dropped out quick, many even got their ideas from dreams not logical means.  I know people, even my bro smart in many things growing up, and completely failed his finals exams. Years later he went to university through other means, and scored top 5% consistently nationwide