Q1 is the average grade for Quarter 1. Q2 is the average grade for Quarter 2. S1 stands for Semester 1. S1 is the average grade of Quarters 1 and 2. Q3 is the average for Quarter 3. Q4 is the average for Quarter 4. S2 is the average for Quarters 3 and 4. Y1 is the final grade for a completed course. When an average is visible you may click the average to see the assignments that affected the score.