Jesse leaves his high school reunion abruptly, walking out on Carrie. A few minutes after Jesse gets home, Carrie appears at the front door. They had not seen each other for ten years, and Jesse did not live at Danny's house in high school, so how did Carrie know where to find him? Unless she physically followed him home, there would have been no way to know his current address in as short of a time frame as this happened.
Part of the episode's main plot would lead to a major error in continuity in season 5, when it's revealed Jesse never graduated high school, and he goes back to night school to get his diploma. During this episode, there is a flashback and Jesse says he's not worried about being suspended because he is graduating the next day.