One by one, the students take their seats. I hand pristine sheets of lined paper to them and supply each desk with a pencil and a pen. Then I recite my lines and start the slow march up and down the aisles. I hate this part, because it reminds me of touring a museum, shuffling along and shifting my weight, getting a good case of museum-foot. I’ll proctor four more tests before the day ends, and by the time I’m home my ankles will be swollen.

