When you were in school did you use Whiteboards or blackboards?
Both. Some classes had whiteboards, others had blackboards.
Both, my old school used blackboards
Blackboards, in high school and earlier college experiences. (I graduated from high school in 1964; whiteboards weren't in common practical use for at least a decade after that.) Whiteboards were more common in my later college experiences, although blackboards were still in use in some classrooms.
Not only that, but my first years as a teacher I had chalk boards. They were horrible! I went home covered in chalk dust. Thank god for smart boards and projectors.