When children are told that certain classmates have learning disabilities, they may behave in ways that inhibit the success of those students in the classroom. this best illustrates that labeling?

This best illustrates the dangers of "Self-fulfilling prophecies".

A self-fulfilling prophecy is a forecast that specifically or in a roundabout way makes itself turn out to be valid, by the very terms of the prediction itself, because of positive input amongst conviction and conduct. A self-fulfilling prophecy is a conviction that works out in light of the fact that we are going about as though it is now valid.