Question: In what country is the grading system based on a 1/4 point scale and has five letter grades?
Related documents: [0]  [DOC] The Vietnamese grading system is an academic grading system utilized in Vietnam. It is based on a 1-10 point scale, similar to the US 1.0-4.0 scale. [END] 
[1]  [DOC] Academic grading in the United States commonly takes on the form of five letter grades. Traditionally, the grades are A, B, C, D, and F — A being the highest and F, short for "failed", the lowest. Numeric to letter grade conversions generally vary from system to system and between academic disciplines. [END] 
Answer: 
the United States
the United States