The ticket website indicates: "Reduced ticket for students aged between 17 and 25 years old". May I assume, passport + student ID are good enough of a proof? Thanks!
I’m an old student (both a student and a senior) and I used mine all over without any problems. Be sure to get in the habit of always asking if they have a student discount, sometimes they don’t tell you.
My daughter used her college ID and received discounts.
thank you very much for the answers!
Keep in mind that the student discount is not honored at all major sights; The Alhambra in Granada is one such place.
BTW, if you're planning to go to Granada, make sure you book your Alhambra tickets 3 months in advance.
Thank you, Priscilla! Yeah, I secured the Alhambra ticket at the very last minute with the last resort (the Granada Card) even two months out. phew!