Surely this could never happen.
We already do this too an extent, schools have "smart" classes and "dumb" classes, typically for things like math. The biggest problem is that they don't apply this until high school. Aside from any innate ability, kids have different learning speeds and letting them fall behind on a subject they don't understand while the rest of the class moves on does no good for anyone.
I, for one, hope that this story isn't true.
As is the psychology of intelligence. And the relationship between g and being a good developer.
All of this is called doing science - because it's currently a work in progress - not denying it.