The grade is calculated as the weighted average of all assessments, scaled to 100%. For example, if the total weight of assessments is 80% and you scored 85% on one worth 40% and 90% on another worth 40%, the grade would be calculated as: ((85 × 0.4) + (90 × 0.4)) / 0.8 = 87.5%. GPA and letter grade are determined based on this final percentage, with 0.5 or above rounded up and lower values rounded down.