What is Sb grade in college?

"Sb" is not a commonly used grade in the college grading system. Different institutions may have their own grading schemes, but the typical grades used include:

- A (Excellent)

- B (Good)

- C (Average)

- D (Passing)

- F (Failing)

Each grade is usually associated with a range of numerical scores. For example, in a 4.0 grading scale, an "A" may correspond to a score of 3.5-4.0, "B" to 3.0-3.49, "C" to 2.0-2.99, "D" to 1.0-1.99, and "F" below 1.0.

It's always best to refer to the specific grading policy or course syllabus provided by your institution to understand the grading system and the corresponding letter grades used.