I often say that I’d teach for free but need to be paid to grade. Grading is hard work. It’s not only time-consuming, but it is stressful, exhausting and at times even agonizing. All too often, ...

Using machines to grade standardized tests is nothing new — we’ve all heard the spiel about making sure we fill in the bubble on our answer sheet completely so the Scantron machine won’t misread it.