Question: can gpa be out of 100?
Answer: Some high schools make more specific distinctions in GPA based on class averages out of 100 (i.e. a 90 average would mean a lower GPA than a 92 average, even though they're both technically A-minuses). Here's a table that shows how grades out of 100 generally correspond to the 4.0 and letter-grade GPA scales.