Over at the Comics Curmudgeon, a reader noticed that Bil Keane, artist of Family Circus is recycling old Family Circus cartoons.  At the left is a Family Circus from 1970 or 1971; on the right is the one printed in last Friday's newspapers:

Aside from the color, the placement of the caption, and the name change of the teacher, the only difference is that Billy's shoe is tied.  Oh, and the teacher no longer has the be-donk-a-donk that she had in the early 70's.