(Strip Number 5012, Original Publication Date, 31 August 1988)
Panel 1: As they walk to their first day of Junior High, Mike tells Pale Lawrence "Ever neat! I can't wait to start going to a new school."
Panel 2: As they enter the building, Pale Lawrence tells Mike that now that they're finally in Junior High, they've gotten away from the little kids.
Panel 3: As they walk down the hall, they're surrounded by ninth-graders who are all like a foot or so taller than they are and they're not all that comfortable about that.
Panel 4: This causes Mike to point out that something tells him that they are the little kids.
Summary: This is possibly because elementary school Mike only tags in adolescent Mike when Martha enters the mix. That, or Lynn is screwing with the sizes of the children to make visual note of something again.