WHAT THE REST HAS TO AVERAGE
Score needed on the remaining 40%, for each letter
needed = (target − current × graded share) ÷ remaining share. Over 100% means out of reach without extra credit; under 0% means it's already locked in.
A90%+
98.8%Possible, barely.
B80%+
73.8%Comfortably in reach.
C70%+
48.8%Comfortably in reach.
D60%+
23.8%Comfortably in reach.
final course grade82.5B
INSIDE ONE CATEGORY
What "drop the lowest quiz" is really worth
Edit the quiz scores, choose how many are dropped, and see the category average move. Then the effect on the course grade, through this category's weight (15%).
QUIZ AVERAGE86.8was 82.5 with none dropped
COURSE GRADE CHANGE+0.64points, final weighting
SAME PERCENT, DIFFERENT LETTER
Your 84.2% under four grading policies
Standard 10-pointBThe most common US scale.
A 90B 80C 70D 60
Plus / minusBSplits each letter into thirds; matters for GPA where A− is 3.7.
A 93A− 90B+ 87B 83B− 80
7-point scaleCUsed by some US school districts; tougher at every letter.
A 93B 85C 77D 70
Rounded half upBMany instructors round to the nearest whole percent before assigning a letter; others never round. Ask.
89.5 → 9079.5 → 80
READ YOUR SYLLABUS
Points-based and weighted grading give different answers
In a points course, every point counts the same: a 200-point final outweighs ten 10-point quizzes because it has more points. In a weighted course, the syllabus fixes each category's share regardless of how many points it holds. Same scores, two grades.
Example: homework 95% of 100 points, two exams 70% of 200 points, final 80% of 100 points.
Points-based78.8%(95 + 140 + 80) ÷ (100 + 200 + 100) = 315 ÷ 400 → 78.8%
Weighted 30 / 40 / 3080.5%0.3 × 95 + 0.4 × 70 + 0.3 × 80 = 80.5%
FROM ONE COURSE TO A TRANSCRIPT