High School 90 Average Is Equal To What GPA
The GPA would be 90.7. The letter grade assigned to that GPA would be dependent on the specific school and bang cap 3 (https://lambangcapgiarenhat.com/lam-bang-cap-3-gia-tai-ha-noi-uy-tin-gia-re-nhat) how they weigh their grades.
For some schools it would equate to an A, while others an A-.