I enjoyed doing the gag covers better than the story ones because they were usually simpler. A cover based on an incident in the plot took a great deal of staging to tell a little story that was still part of the book. And it had to make sense on its own.
“Instead, California is one of only 10 states that provides in-state college and university tuition to illegal immigrants. That's grossly unfair to a legal high school student who moves out of California for a year, then returns to attend college.”