What is the spanish grading scale in spanish speaking countries

The majority of schools and universities in Spanish speaking use a ten-point grading system with corresponding numerical grades for academic work. The passing grades are from 6 to 10 where 10 is the maximum grade. A grade of 5 and below is not a passing grade, and this grade can be abbreviated as NA for "Not Acreditado".

Hope this helps

de estos colores. sounds about right.