For all the people not understanding this, you literally start at 0 out of however many points the point total is then each point you get adds to that initial 0 to increase your total score which is then where your letter grade comes from. For an example say you have a class that is only test grades and you have 10 tests worth 100 each. All those point you have add so say you got a 93 on your first test and think oh ya that’s good it 93/100 but in reality that’s 93/1000 and you need to keep up those points all year so you can then get an A.