I spent my school years getting kicked out and out back into those classes. Typically they would notice that the normal classes were too easy, put me in the "gifted" program which was just 100x more boring with a 10x larger work load, so I didn't do that shit, got kicked out and the cycle would begin a couple years again.

While there were certainly some very intelligent people in these classes, plenty of other struck me as not necessarily the brightest.

The one exception to this was in 5th grade, I was put into a gifted program that was markedly different from normal classes. For the most part, there was a lot of freedom to work on what you wanted, no busy work. Occasionally the rather group would go outside where we should chill and just discuss various things.