Grading System for Thammasat 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	-

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