What is my GPA at school?

Question

At school i get 90/100 average. So how can i calculate my GPA cuz we dont have this at my school?

Answer 1

That's about a 3.7 on a typical 4.0 scale.

Since your school doesn't have one, here's a convention that's pretty widely used.

Use the following and average it:
A = 4.0 (94+)
A-= 3.7 (90-03)
B+ = 3.5 (87-89)
B = 3.0 (84-86)
B- = 2.7 (80-83)
and so on, though with a 90, you probably don't have any grades lower.