A universal term for "educación básica y media"

I'm writing my curriculum vitae in english, but attended school in Chile. In our education system we have "educación básica y media". Those are the first twelve years of formal education before the University. I'm struggling to find a good translation for this term. In particular I'm interested in finding a term that can be universally understandable, independent of the particular schooling system of different countries.

Solution 1:

I would recommend you write

"Completed Primary and Secondary Education (12 years) in [name of city], Chile."

This will be clearly understood by any English speaker.

Solution 2:

From all the given options, "Pre-University Schooling" is the one I like the most because of its universality.

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