Students sometimes have heart-felt and arguably legitimate complaints
about exam grading. This note suggests a strategy for dealing in a ser
ious, judicious and seemingly fair and responsive way with such compla
ints. The suggested strategy allows the professor to take such complai
nts seriously, without giving him/her the reputation as an easy mark.
Moreover, it uses a characteristic of letter-grade systems to lower th
e transactions costs of dealing seriously with such complaints.