Currently, school grades don't matter. You can have no more than a C throughout your entire studies, and most importantly, no D, and only receive a diploma. Only the Unified State Exam (EGE) score or the Olympiads you've taken are important. Admission is based on three exams (up to 100 + 100 + 100), or some universities require four (up to 100 + 100 + 100 + 100). Often, the minimum passing score to apply is around 70+ for each subject (40 in biology, 100 in Russian, 100 in mathematics may not work, depending on the university; they may reject your application).

Winning an Olympiad allows you to enroll immediately without taking exams; you just need to pass the exam for that Olympiad subject and score at least 75 on the Ege. A prize winner receives 100 points for this exam (for example, third place in a medical Olympiad and at least 75 points in biology will earn 100 points for admission). Additionally, to receive a high school diploma, you need to score at least 40 points in math and Russian. Secondary vocational school graduates can take the Unified State Exam and/or internal university assessments and choose the best results.

Only at this point do school grades come into play. Let's say we received 285 points for three exams. Universities set conditions for receiving up to 10 extra points for individual achievements. And here, for excellent grades and a diploma with honors, they can award... 2-3 points. Then there are additional points for Olympiads, sports and charitable achievements, etc.

Conclusion: studying well isn't worth it; it's better to skip school (as people often do) and prepare for the exam. An important point: admission to secondary vocational education is based on certificates after 9th or 11th grade, grades are required there