[driftdiver]

“I wonder what they would do with them in school? “

Bore them to the point they would rather do drugs than learn.

[Aroostook25]

So what happens when, using Khan Academy, you wind up with a kid in fifth grade who has mastered high school trigonometry and physics

They could teach that kid college calculus and physics.

Duh!

[Boogieman]

“Bore them to the point they would rather do drugs than learn.”

^^ This. I was the kid who had completed calculus by the 5th grade, but was still stuck in the public schools going through the motions. By high school, I was so bored I just started skipping classes and smoking weed.

[Only1choice____Freedom]

Bore them to the point they would rather do drugs than learn.

That would make them "normal"

Perhaps label them ADD or some other acronym so that they could be singled out and punished for their "advanced" condition.

.

"The nail that stands out gets pounded down." - Japanese proverb.