> The imperfect overlap between the school ethic and the work ethic is especially blatant in modern American colleges. Fifty years ago, college was a full-time job. The typical student spent 40 hours a week in class or studying.98 Since the early 1960s, effort collapsed across the board. “Full-time” college students average 27 hours of academic work per week—and only 14 hours of studying. (...)

? So your sentence does not make logical sense to me? Did you mean before the 1960s people would spend 40h _plus_ studying. Because the way you write it is that fifty years ago college was 40h (in-class and studying), and now it is 27h in class + 14h studying (41h) so nothing changed.