Memory lapse

   “Yes, he does. He claims that his memory has worsened over the years, but the things I’ve seen him do are absolutely mindblowing.

When he was 5 years old, Magnus memorized the populations, capitals, areas and flags of all the 200 countries in the world, much to the surprise of his family, who had no idea he was even attempting such a thing. He had even taken it further, though, by memorizing the same numbers for all the 400+ municipalities of Norway. At memory games he was always unbeatable.
As a young teenager (I think he might have been 13), Magnus appeared on national television in the office of Grandmaster Simen Agdestein, the former number one in Norway. The walls in Agdestein’s office were covered with chess books. The GM, who was sort of his coach at one point, pulled down a random book from from the shelves, opened it up on a random page and held up a diagram, while covering all the text. Magnus hesitated for a moment, but then went on to provide the names of both the players who had played the game in the diagram as well as the year it was played and the tournament venue. He repeated this trick a few times and was spot on every time. We’re talking games that were played by Soviet players decades before Magnus was even born. And he knew them all.
His friend and second, GM Jon Ludvig Hammer, asked Magnus to reenact this stunt in adulthood, when training for his world championship match with Anand. I think there’s a YouTube video of it somewhere. Like I said, if his memory has worsened, it’s still quite insane.
Of course, he performs the usual grandmaster party tricks of simultaneous displays and blindfold exhibitions, but he takes it a step further. Among his feats are beating 10 players while blindfolded and 3 players blindfolded while playing with blitz time controls! It’s hard for us mere mortals to fathom exactly how difficult that is.
When Magnus is home in Norway, he sometimes shows up to tournaments, kibitzing on games. Discussing my own games with him can be rather humiliating, as he usually has better recollection of them than I do myself! And that’s after casually strolling past all boards in the tournament.
I’ve met my fair share of smart people, but never anyone with a memory like that.”

Love what you do even when it doesn't like you

”  Many people who do not do well in school can be broadly divided into two types:(CLICK HERE AND CHANGE YOUR LIFE FOREVER)
People who really try but just can’t do well.People who can’t be bothered (for one reason or another).
I presume you were referring to the 2nd type since people with high IQ typically fall into the 2nd category.
I am speaking from my own experience and what I write here may not reflect the situation for others. I am a Mensa member so that may put me in a better position to answer this question.  Well, intelligent people just do not like doing things they don’t like and they are very stubborn about it. Take Einstein for example, he excelled in all math-related subjects but fared much worse in others. If you were to read his biography
His Life And Times: Philipp Frank: Books
Even for subjects that he liked, he didn’t always agree with the way it was being taught. That led to conflicts with his teachers and that explains why he did not succeed in getting a postgraduate research position back in his university since no professor wanted to take him in. His results were not particularly stellar anyway. He eventually gave up and became a patent clerk. But being the genius that he was, he taught himself advanced physics and engaged in his own research into the “laws of the universe”. Intelligent people will shine if left on their own to discover what they really like and engage themselves in it. If you force them to go through public schooling (like everyone else), the potential creative genius within them will most likely be buried.
Therefore, it isn’t surprising intelligent people might do badly in school. Good results has more to do with hard work than with a high IQ. Of course, a certain level of IQ is needed to do well but certainly not of the level of Einstein’s.” USA, LLC