Grading System for Chulalongkorn University

Most Common

Grade	Grade Description	US Grade
A	Excellent	A
A-	Very Good	A-
B+	Very Good	B+
B	Good	B
B-		B-
C+	Fairly Good	C+
C	Fair	C
C-		C-
D+	Poor	D+
D	Very Poor	D
F	Failure	F
AU	Audit	-
WF	Withdrawal because of Failure	-

4-point

Secondary School

Grade	Scale	Grade Description	US Grade
4	75.00 - 100.00	Excellent	A
3.5			AB
3	65.00 - 74.00	Superior	B
2.5			BC
2	55.00 - 64.00	Satisfactory	C
1.5			CD
1	50.00 - 54.00	Pass	D
F	0.00 - 49.00	Fail	F

Letter Grade (4 point)

Asian Institute of Technology

Chulalongkorn University

King Mongkut's University of Technology

Mahidol University

Grade	US Grade
A	A
B+	AB
B	B
C+	BC
C	C
D+	CD
D	D
P	S
F	F