The basic method: add all grades and divide by the number of grades

Your course average is the sum of all your grades divided by how many grades you have. If you earned 85, 90, 78, and 92 on four assignments, you add them (345) and divide by 4 to get 86.25. That is your average.

Most instructors use this straightforward average method for courses where every assignment, quiz, or test counts the same. It works when your syllabus does not mention weights or percentages.

The calculation takes seconds with a calculator or spreadsheet. The harder part is knowing which grades to include — some instructors drop the lowest score, exclude certain categories, or count only work after a certain date.

Key Takeaways

  • A straightforward average adds all your grades and divides by the number of grades; a weighted average multiplies each grade by its percentage value before adding them up.
  • Your syllabus tells you whether grades are weighted and what percentage each category (tests, homework, participation) represents.
  • If your syllabus lists percentages that add up to more than 100 percent, ask your instructor which grades are actually counted toward the final grade.
  • Spreadsheet formulas like AVERAGE() and SUMPRODUCT() save time and reduce math errors when you have many grades.
  • Your school's learning management system (Canvas, Blackboard, Brightspace, or Google Classroom) usually calculates your average automatically, but you should verify it matches your syllabus.

Weighted averages: when different assignments count for different amounts

Many courses weight grades by category. Your syllabus might say homework is 20 percent, quizzes are 30 percent, and the final exam is 50 percent. In this case, the final exam matters more than a single homework assignment, so you cannot just add all grades together.

To calculate a weighted average, multiply each grade by its weight (as a decimal), then add the results. If your homework average is 88, quiz average is 82, and final exam is 75, the calculation is: (88 × 0.20) + (82 × 0.30) + (75 × 0.50) = 17.6 + 24.6 + 37.5 = 79.7.

Check your syllabus for the exact percentages. Some instructors list weights per assignment instead of per category — for example, "Midterm 25%, Final 25%, Projects 50%." The method is the same: multiply each grade by its decimal weight and add them.

Finding the weights in your syllabus

The grading breakdown usually appears in a table or section titled "Grade Distribution," "Grading Scale," or "Course Requirements." Look for percentages next to category names like Participation, Quizzes, Exams, Papers, or Projects.

If the percentages add up to 100, you have all the information you need. If they add up to more than 100 — for example, 20% + 30% + 30% + 30% = 110% — contact your instructor. This usually means some categories are optional, or the syllabus has an error.

Some syllabi list points instead of percentages. If homework is worth 100 points, quizzes are worth 200 points, and the final is worth 300 points, the weights are 16.7%, 33.3%, and 50% respectively (each divided by the total of 600). Your learning management system usually handles this conversion automatically.

Using a spreadsheet to track your grades

A spreadsheet saves time and prevents math mistakes. Create columns for the assignment name, your grade, and the weight or category. Use the AVERAGE() function for straightforward averages or SUMPRODUCT() for weighted ones.

For a straightforward average in Google Sheets or Excel, type =AVERAGE(B2:B10) in an empty cell, replacing B2:B10 with the range of your grades. For a weighted average, use =SUMPRODUCT(B2:B10, C2:C10)/SUM(C2:C10), where column B holds grades and column C holds weights.

Update your spreadsheet after each assignment is graded. This shows you where you stand in the course and how much a final exam or project could change your average. Many students find this motivating — you can see the exact impact of studying harder for the next test.

What your learning management system calculates

Canvas, Blackboard, Brightspace, Google Classroom, and similar platforms show your current grade automatically. They use the weights from your syllabus if your instructor entered them correctly. Check the grade book or gradebook section of your course.

The system usually displays both your current average (based on grades so far) and a projected final grade (if you maintain the same performance on remaining work). Some platforms let you see which assignments are missing or not yet graded.

Verify that the system's calculation matches your syllabus. If your syllabus says homework is 20% but the system shows it as 30%, contact your instructor. The system is only as accurate as the weights entered into it.

Grades that might not count toward your average

Some instructors drop the lowest quiz or allow you to retake a test and use only the higher score. Others exclude extra credit or bonus points from the average calculation. Read your syllabus carefully for these rules.

If your syllabus says "lowest quiz dropped," remove the lowest quiz grade before calculating your average. If it says "retakes allowed, highest score counts," use only the highest attempt. These rules change your calculation significantly, especially early in the course when you have few grades.

Ask your instructor if you are unsure whether a grade counts. Some teachers count participation only if it is above a certain threshold, or exclude grades from before a certain date. Knowing this prevents you from calculating an average that does not match your actual course grade.

Calculating what you need on the final to reach a target grade

If you know your current average and the weight of remaining work, you can calculate the minimum grade needed to reach a target. Rearrange the weighted average formula: if your current grades average 78 and count for 60% of the course, and the final is 40%, you need a final grade of at least 85 to reach 80 overall. The math is: (78 × 0.60) + (X × 0.40) = 80, which solves to X = 85.

This calculation assumes your current average stays the same and only the final exam remains. If you have more assignments coming, the math is more complex — you would need to account for all remaining work, not just the final.

Use this as a planning tool, not a may provide. A target of 85 on the final is useful to know, but it assumes you perform at your current level on everything else. If you have struggled on recent assignments, your current average may drop before the final.

Frequently Asked Questions

Should I include grades from before I switched my major or changed sections?

That depends on your school and instructor. Some schools allow you to exclude grades from before a major change, while others count all grades in the course. Check your syllabus or ask your instructor whether grades from earlier in the semester are still counted.

What if my instructor uses a points system instead of percentages?

Convert points to percentages by dividing each category's points by the total points in the course. If homework is 100 points, quizzes are 150 points, and the final is 250 points, the weights are 25%, 37.5%, and 62.5%. Then use the weighted average method.

Can I calculate my grade if some assignments are not yet graded?

You can calculate your current average based on grades you have received, but it will not match your final grade. Your learning management system usually shows both your current average and a projected grade if you maintain the same performance on remaining work.

Why does my calculated average not match what the system shows?

The most common reason is that you included or excluded a grade the system did not. Check whether your syllabus says any grades are dropped, whether extra credit is counted separately, or whether some assignments are weighted differently than you thought. Compare your calculation to the weights shown in the system's settings.

Do I need to include incomplete assignments in my average?

No. Calculate your average using only grades you have received. Once you submit a missing assignment, add that grade to your calculation. Your learning management system typically shows incomplete work separately from your grade calculation.