[quote=KeithHandy;8610]Shouldn't you call it a "second second language", since a third language would mean you first learned Catalonian and then went to an English class taught entirely in Catalonian by a native Catalonian-speaking teacher?

(Don't mind me, I'm just talking nonsense for my own amusement!)
Well, that already happened. Some of my English teachers were Catalonian native speakers and spoke in Catalonian during the class.
Here some teachers speak in Catalonian and some in Spanish.