Each of the cast member photos has been updated in the opening credits.
The photo of Andy Keaton (Brian Bonsall) is added in the introduction for the rest of the series.
Brian Bonsall now takes over the role of Andy Keaton, who has now aged into a pre-schooler.
The introduction shows a picture of the Keatons with Andy and the cast members in the kitchen hugging each other and Andy giving Alex a kiss.
The title alludes to the Beach Boys song Be True To Your School.