This spring, Hal David, principal at Cedartown High School in northwest
Georgia, has spent a lot of time thinking about evening gowns.
"Unacceptable," he has labeled some dresses shown on posters plastered in the hallways to publicize the school's first dress code for prom. The signs also show styles deemed "acceptable" for the event, set for April 21 at the local country club. "It's a picture-is-worth-a-thousand-words kind of deal," says Mr. David. "We don't want somebody to spend a lot of money on a dress and then show up and there be an issue."
Raymond McCrea Jones/Redux Pictures for The Wall Street Journal
At Cedartown High School, in Georgia, posters publicize the new dress code for prom and show images of unacceptable styles.
Sunnyvale High School
Some high schools have put together elaborate PowerPoint presentations with annotated images. This slide, from Sunnyvale High School in Texas, shows how low is too low for the back of a dress.