That is the Citizens on Patrol (Program) ... which sounds a bit like what they were doing in part 3 ... but calling it something else. So Part 1, 3 and now 4 has giving people (viewers) new students and their "adventures" in making it through the ranks ... well actually just throwing them some bones to have something to laugh throughout the movie.
Talking about this: the joke from movie number one with the podium .. it still gets ... referenced (milked) ... and why not? It is the most memorable of the jokes of the whole series. I feel a bit bad for the Proctor character ... he is the butt of many of the jokes and has to walk quite the fine line. Him and his boss ... well they do not have the easiest job, but they make it look easy. There is a feeling of decline ... and of course there is - because overall what new jokes are there to tell? You even get the family back that likes to hit each other (I suppose that is meant to be funny ... maybe it is for some I reckon) ... Anyway, let's not fret and while this has overstayed its welcome at least there are so many of the original cast leftover that you may not mind ... also you have appearances from Sharon Stone (clothed - a lot!) and David Spade as skater ... which is quite insane in and of itself ... but also a short cameo by none other than Tony Hawk himself. It kinda feels like the first appearance from either of those ... or at least one of the first ones they did, I might be wrong ... do we care? It's just fun to see them I guess.