Exaclamente! We have no idea what type of educational system, if any, will exist to turn out people qualified to handle that waste. And we don't have anyone now out of our best schools who knows how to handle that waste.
Nuclear anything is the most extreme form of arrogance. It is future-cide. We are committing murder/genocide on people who haven't even been born yet for up to 240,000 years, taking into account as you said the various stages of decay until plutonium is no longer toxic to life.
I would say that in an environment riddled with toxic radiation, the chances of having a top notch education system hover around zero. If we don't want to be the most villianous race since the dawn of time, we should be figuring out how quickly we can extricate ourselves from this proven menace and how we can properly store any residuals or waste as to minimize the impact on future generations.
Anyone who has seen the amusing but visionary movie "Idiocracy" knows just what a nightmare nuclear will be for our descendants..