Many college classes are lightly attended and only mildly paid attention to already. I had a professor in college who would religiously take attendance every mo

Many college classes are lightly attended and only mildly paid attention to already. I had a professor in college who would religiously take attendance every morning then after mid-terms and finals he would show a scatter plot of attendance versus test scores. There was mild correlation, but still plenty of cases outside what you'd expect (perfect attendance + terrible scores, or low/no attendance + high scores)