Mr Uppity thinks that immigrant kids who can't speak fluent English should not be in his classroom, so he doesn't give them too much of his time. Then, as he expects, they do not perform too well in the tests he marks. Here we have a clear case of:

A) the failure of immigration policies.
B) a melted pot policy.
C) the need for special classes for immigrant children.
D) a self-fulfilling prophecy.

Self-Fulfilling Prophecy

A phenomenon where an initially inaccurate expectation leads to actions that cause the expectation to become true.

Immigrant Kids

Children who have moved, typically with their families, from one country to another, facing new cultural, educational, and social environments.

Fluent English

The ability to speak or write the English language smoothly, easily, and with little to no difficulty in understanding or being understood.