GPA are number equivalents to letter grades. For example, an A is 4.0, A- is 3.67, B+ is 3.33, B is 3.0, etc. etc. I think it tends to differ slightly based on school, but the highest GPA possible is generally a 4.0. They all get avereaged out in your last year of high school or cumulatively throughout your college career. So if you get a 3.9, it means you're nearly a straight A student, and that's pretty darn good.
What grade are you in at school?
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