Zach LaVine's dunks are so easy to do, even a kid in the 8th grade can do them! Actually, it's more like 15 year old Cassius Stanley is so impressive that he can do dunks very few people in the NBA not named Zach LaVine can do.
It will be interesting to see what type of dunks the 6'4 Cassius will be doing when he gets old - like around the time he's allowed to get his driver's license or buy tickets to a R-rated movie.
So besides questioning if he's really in the 8th grade, the other question you are probably asking is if he has any game. Well, he's the #1 8th grader in Cali. Here's some video proof from last year's Pangos Jr All-American Camp.