When failed subjects are reported in written, they normally have a score of NA or N/A, standing for No Acreditada (Not Accredited) or No Aprobada (Not Approved).
Major works, such as a written thesis or doctoral dissertation, may not have a grade, but appear in certificates simply as AC, standing for Acreditada (Accredited).
Higher-level educational institutions, such as degree-awarding universities, require a minimum score of 70 (average) to pass a subject, instead of the regular 60.
In many universities, such as federal institutes of technology, an overall grade point average of 90 (very good) or better entitles the student to graduate with honors, other requirements such as a final work or thesis being waived, and automatically awards him or her the professional license (cédula profesional).
Other grading systems, such as those used in European countries, or the United States GPA values 0.0–4.0, are less common, but can be converted.