what exactly is this diploma?
In each country, there are universities or other organizations that organize examinations for students from other countries that study their language.
I'm not a bureaucracy type, and I may have confused things a little
but, to my knowledge, the Universities of Salamanca and Santander with the assistance of Cervantes Institute are the ones that organize the Spanish language examinations. I'm taking Salamanca's ones, which has three levels. Certificado Inicial de Español, Diploma Básico de Español and Diploma Superior de Español.
D.B.E. proves efficiency to talk and write about quite difficult subjects, keep up a social conversation... efficiency to write fics in Spanish too, as José assures me
It's somewhere between Caimbridge's Lower and Advanced exams (sorry I don't know their official names).
Just a bit of info for everyone who wants it,
AnnaBtG.