who can tell me the american education syetem?

谁能告诉我美国的教育系统?

We are a diverse university with international students from more than 130 countries. Here are some details about the U.S. academic system.

Grades
Professors give letter grades to show the quality of a student’s work. The grade tells how well the student is performing on tests, research papers, and class participation. Most colleges or universities require that students maintain a minimum grade point average to continue their studies. Here are the grades and the grade point averages:

A+ (4.0)

A (4.0)

A– (3.7) (excellent)
C+ (2.3)

C (2.0)

C– (1.7) (average)
F (0) (failure)

B+ (3.3)

B (3.0)

B– (2.7) (above average)
D+ (1.3)

D (1.0)

D– (0.7) (poor)

Academic Year
The university academic year at IU is made up of two semesters. The fall semester is from August to December. The spring semester is from January to