Sacred Haven of Debauchery

80-90 points... And what does that mean? 2? 3? 5?

We don't get grades.

Although medalists do get grades. They do, because if a medalist confirms all their grades in their certificate (based on the Unified State Exam results), they will receive a bonus. So, I need to get a 5 in computer science and math, and a 4 in Russian and physics. As for how those grades are distributed – I have no idea.
80-90 points is out of 100 (for all subjects).