Corrected entry: In the scene when Diane is confessing to her father that she slept with Lloyd, her clothing and hair completely change three times.
Corrected entry: In the famous scene where Lloyd is holding up the boombox to communicate through music with Diane, he is parked at the end of a long driveway with picnic tables under old trees. Both the front of her house and the old age home were shown at other points in the film and neither looks anything like where he is standing.
Corrected entry: In the beginning of the movie, at the graduation, it is said that they go to Lakeview High School. But when Lloyd's on the phone with Diane he says Lakeside.
Corrected entry: Lloyd calls Diane to tell her "congratulations on your fellowship, I read about it in the paper", which Diane and her father have just heard about the fellowship an hour before. There's no way he could have known.