What is the literal grade equivalent of 88?

There's no single "literal" grade equivalent for an 88. The letter grade equivalent depends on the grading scale used. Common scales include:

* 90-100 = A: An 88 would be a B.

* 80-89 = B: An 88 would be a B.

* 85-89 = B: An 88 would be a B.

Therefore, on most common grading scales, an 88 is a B.