The Ugly Truth About High School Grades and Intelligence

Good school grades have been highly linked to intelligence. The expression of intelligence is not only left to those who are schooled. The schooled and the unschooled express intelligence in various facets of life.
In this video, the following questions are answered.

Is school still relevant if passing examination isn't all that relevant to success in life?

Should you aim for success if you are in school?

Should you be called dumb if you are unable to get good grades in school?