Continuity mistake: During the classroom scene, Donald Sutherland writes the word "Satan" on the board. In the first shot, the "t" in Satan in directly over the crease on the chalkboard. In the next shot, it is clearly on one side of the crease. (00:18:00)
Continuity mistake: When the Fraternity house is being taken down, the Greek letters switch places. (01:06:05 - 01:06:55)
Continuity mistake: When Bluto is looking through the window of the girls' bedroom, the shot from behind him shows his shoulders are just above the window sill. The shots from inside the room show him to be a lot higher than this. (00:38:35)
Continuity mistake: In the scene where Otter and Boon are hitting golf balls near the ROTC drills, Otter puts down the golf bag he is carrying and draws a club. The camera moves to the ROTC trainees, and when it comes back to the golfers, the bag is back on Otter's shoulder and there is no club out of the bag. (00:20:10)
Continuity mistake: When Otter is making out with Shelly from Dickinson college, in the back of the car she is shown with her bra off, and it is hanging on her right arm by one strap. When the guys come running out of the club seconds later to make their escape, Shelly is shown jumping out of the car and diving through the window of the car parked next to it, but her bra is now on and hooked as if it hadn't been removed yet. (01:16:30 - 01:17:15)
Continuity mistake: During the toga party, the mustard stain on Bloto's toga, disappears and reappears. (00:55:45)
Continuity mistake: When Bluto is spying on the girls of the sorority house, all of the blinds are up giving him a good look. In the next shot when he moves the ladder to a nearby window, all of the blinds are down.
Continuity mistake: Before the hearing, Katy and Boone are talking at the bottom (half) of a stairwell when Otter comes down with a briefcase in his right hand and he puts his left hand on Boone's shoulder. In the next shot the briefcase is now in his left hand with his right hand on Boone. (01:00:55)
Continuity mistake: In the cafeteria scene, Kevin Bacon's character sits down twice. (00:34:05)
Continuity mistake: During the Delta Rush Party, Pinto (then just a pledge) got a beer. Notice that, as the scene changes camera angles, the heads on the beers go up, down, and up again. (00:07:30)
Continuity mistake: When Flounder and Larry arrive at the Omega house for the party, sunlight can be seen coming through the windows, although it was night when they arrive. (00:03:00)
Continuity mistake: In the scene where Pinto is making out with the Mayor's daughter, as she sits up on him so she can unhook her bra, he starts to slide his hands under her bra right before she passes out and falls over. As she is falling he pulls the tissue paper out which hangs like streamers from his hands to elbows. After a quick shot to show her on the bed, there is a shot of Pinto now holding the tissue in little tiny balls in each hand. (00:58:05)
Continuity mistake: In the cafeteria, Bloto puts stuff on his tray. Before the cut his bunch of bananas are on the side of the tray. After the cut the bunch is on the other side. (00:33:05)
Continuity mistake: When Stork and his associate step conspicuously onto the curb to watch the parade the pompom's yellow tassels face front. When the man behind them says, "Excuse me, my kid can't see," the purple tassels face front. (01:33:05)
Continuity mistake: In the classroom scene, Donald Sutherland takes a bite of the apple and a split second later in the next shot, he has nothing in his mouth. (00:18:05)
Continuity mistake: When they are getting the girls from the other college, when the first girl comes down the stairs her broach is on the left of her top. When she is sitting down, the broach has moved to her right. It changes back to her left again after this shot and for the rest of the film. (01:10:20)
Continuity mistake: The scene where Flounder tosses the box of marbles into the street to trip the ROTC cadets during the parade. Look at the background parade audience as they go into fast forward along with the action of the marbles... (01:38:30)
Continuity mistake: When one of the Delta Frat Guys is drinking beer in the frat, in his close up he is holding a mug by the handle, in the reverse shot he is not holding the handle. (00:07:30)
Continuity mistake: During the parade, we see Nedermeyer leading the ROTC cadets, who are carrying M1 rifles. Later, during the riot, we see Nedermeyer take an M1903 rifle off a cadet and use it to shoot at Flounder. (01:35:50 - 01:43:05)
Continuity mistake: During the parade scene at the end of the movie, there are shots of the street that it will take place on, and there is a view of a (misspelled) "Homestead Ferniture" store in two different shots. When the parade is actually taking place, the store is changed to (correctly spelled) "Homestead Furniture". Several shots after that, it changes back to "Homestead Ferniture" (01:33:20 - 01:44:00)
Answer: There's no indication that the Deltas didn't face legal ramifications from their actions at the parade, nor that Pinto didn't get in trouble (when we last see him, he's literally being chased by the mayor). The film ends at that point and, although the film provides title cards telling us what happened to the characters far in the future, we don't see the immediate aftermath.