Are "migrants" the same as "refugees" the same as...?

[Gandalf]

Bollocks. When in Rome do as the Romans do.

Also teachers are not migrants who crawled ashore looking for handouts but are professional workers who had to qualify for the position through the embassy of the guest country by submitting various academic credentials.

They are still economic migrants though and it would be absurd to expect a short term visa holder to learn a host language. The Romans are learning English too, but I agree that there is a big difference between an illegal immigrant and an educated Western teacher.