What Wikipedia says: "His frequent absences from school jeopardized his position as a diver on his school's swim team." - Wikipedia
According to Wikipedia, Dr. Dre would miss high school class so frequently that his spot on the diving team was put into limbo, which obviously begs the question: if this was a Sliding Doors moment, and Andre Young's life went another direction, what would it be like?
The answer: Dre stays committed to diving, ensuring a scholarship to UCLA, and subsequently represents both his country and his city in the 1984 Summer Olympics, which take place in Los Angeles. Of course, Warren G and Snoop Doggy Dogg follow Dre's lead and begin their careers as synchronized divers. Nate Dogg, naturally, swims the medley. And they all win gold medals, because platinum isn't cool until the mid-1990's.
But that's not all! Wheaties boxes! International competitions! More Wheaties boxes! And if Dre never skips classes, sadly, N.W.A. doesn't have the same soul. Death Row never has the same backbone. Eminem never has the same legitimacy. AND MOST IMPORTANTLY, IN 2014, WE'D ALL BE LISTENING TO MUSIC ON IMPERFECT HEADPHONES.