Grading System for National Autonomous University of Mexico

Secondary/Tertiary with 6 or 60 as passing

Grade	Scale	Scale 2	Grade Description	US Grade	Notes
MB	90,000 - 100,000	9,000 - 10,000	Excellent/Very Good (Excelente/Muy Bien)	A
B	80,000 - 89,990	8,000 - 8,990	Good (Bien)	B
S	60,000 - 79,990	6,000 - 7,990	Sufficient (Suficiente)	C
AC			Accredited (Acreditada)	S
NA	0,000 - 59,990	0,000 - 5,990	Fail (Reprobado)	F	Usually marked as NA or N/A.

Secondary/Tertiary with 7 or 70 as passing

Scale	Scale 2	Grade Description	US Grade	Notes
90,000 - 100,000	9,000 - 10,000	Excellent/Very Good (Excelente/Muy Bien)	A
80,000 - 89,000	8,000 - 8,900	Good (Bien)	B
70,000 - 79,000	7,000 - 7,900	Average/Sufficient (Regular/Suficiente)	C
0,000 - 69,000	0,000 - 6,900	Not Accredited/Fail (No Acreditada/Reprobado)	F	Usually marked as NA or N/A.