This experiment proves that students have the capability to learn that it is not right to treat people based on things they can't control (eye color, skin color, ect). They were able to empathize / sympathize after doing this experiment.
As a teacher in this day and age I could not fathom ever completing this is a classroom. Not only because of parents, but from the school itself. Many people are still unaware of their white privilege and it is becoming a trait passed from parents to children.