10/27 through 11/4 1989 story arc
Calvin did a report on bats for school in this 1989 story arc. In it, he exposed his dubious knowledge of bats (he firmly believed them to be bugs when they were actually mammals). As he had done no research, he opted for a dramatic, sensationalistic speech highlighting the terrifying aspects of bats. Also, his scientific illustration looked like a copy of the Batman logo with fangs added. Calvin ultimately failed the assignment.