It is revealed in this episode that the ages of Tootie and Arnold are 12 and 9, respectively. In real life, Kim Fields (Tootie) was 11 and Gary Coleman (Arnold) was 12 and three months shy of his 13th birthday.
Arnold has a crush on Tootie who is 12 years old. Arnold's shirt has a # 12 on it.
Starting with this season (along with Season 4), there's changes to the opening sequence. After the camera pans the mid Manhattan skyline, previous episode clips are now used (along with the series stars in "freeze frame" during their respective credits). It replaced the familiar sequence of Drummond (in his limousine) picking up Arnold and Willis in Harlem on the way to their new high rise home on Park Avenue.