|"Is this all real? Or has this been happening inside my head?"
The subject of this article is of a real-life person, place, group, company, product, or creative work that has been mentioned "in-universe" in a canon source. The Harry Potter Wiki is written from the perspective that all information presented in canon is true (e.g., Hogwarts really exists), and, as such, details contained in this article may differ from real world facts.
Andorra is a small country in the mountains of southwestern Europe, bordered by Spain and France. It is safe to say that Andorra is affiliated with the wizarding world as it has its own Ministry of Magic.
It is possible that young wizards and witches have the opportunity to attend Beauxbatons.