Academic grading in Portugal

In Portuguese middle-schools, a five-point grading scale is used, where:

5 (very good or excellent) is the best possible grade (90-100%), 4 (good) (70-89%), 3 (satisfactory) indicates "average" performance (50-69%), 2 (unsatisfactory) (20-49%), 1 (poor) is the lowest possible grade (0-19%).

In high-schools and universities, a 20-point grading scale is used. When it is the case of the final grade of an academic degree, each grade is assigned a qualitative mark by degree (depending on the university, the students have at most a final grade of 16 or 17, being almost impossible for students to have a final score between 18 and 20):

GradeQualification20⋮17.5Excellent17.4⋮15.5Very good15.4⋮13.5Good13.4⋮9.5Sufficient9.4⋮3.5Weak3.4⋮0Poor

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