How to Calculate WASSCE Aggregate in Ghana – 2026 Guide
Knowing how to calculate your WASSCE aggregate can help you understand your performance and assess your chances of gaining admission into the University.
Your WASSCE aggregate is not calculated by adding all the grades you had on your exam result. Instead, it is obtained by adding the grades in your best six subjects, which must include three of your best core subjects and three best elective subjects.
But before we dive into how to calculate WASSCE aggregate, we must first come to understand WAEC’ WASSCE grading values on your result.
The West African Examination Council (WAEC) uses standardized system represented as letter grades that starts from A1 (which is the highest grade), down to F9 (which is the lowest grade) in assessing students. Each letter grade is assigned a numerical value which helps you in calculating your score.
Below is a table description of WAEC’s grading scale for WASSCE candidates.
| Grade | Interpretation | Value | Mark Range (%) |
|---|---|---|---|
| A1 | Excellent | 1 | 75% – 100% |
| B2 | Very Good | 2 | 70% – 74% |
| B3 | Good | 3 | 65% – 69% |
| C4 | Credit | 4 | 60% – 64% |
| C5 | Credit | 5 | 55% – 59% |
| C6 | Credit | 6 | 50% – 54% |
| D7 | Pass | 7 | 45% – 49% |
| E8 | Pass | 8 | 40% – 44% |
| F9 | Fail | 9 | 0% – 39% |
What does WASSCE Aggregate mean
The WASSCE aggregate is calculated by adding the numerical values of your best six subjects. This includes three of your best core subjects and three best elective subjects.
This means the WASSCE Aggregate formula will be: English + Mathematics + best 1 other core + best 3 elective subjects.
Note: Having a lower aggregate score after adding the best six subjects indicate you had a good grade.
How to Calculate WASSCE Aggregate Step by Step
Follow these three simple steps to calculate your WASSCE aggregate score.
Step 1: Select your best three core subjects
You are to select your best three of your core subjects (English, Mathematics, Science and Social). These are the subjects you had the lowest numerical values. This includes English, Mathematics and choose the better grade between Science or Social.
Step 2: Select your best three elective subjects
You then have to select your best three elective subjects, depending on your SHS programme ie., General Science, Business, General Arts, Visual Arts, Home Economics.
Steps 3: Add the values
Now combine the numerical values of your best three core subjects and your best three elective subjects from step 1 and 2 to get your aggregate score.
Worked Example
For example, a Science student with the following grades for Core and Electives:
- Core subjects: English (A1), Mathematics (B2), Science (B3), Social (C4)
Best 3: A1 + B2 + B3 = 6
- Electives: Chemistry (A1), Biology (A1), Physics (B2), Elective Maths (B3)
Best 3: A1 + A1 + B2 = 4
Hence, total aggregate scored by student: 6 (core) + 4 (electives) = 10
Note: The lowest possible aggregate is 6 whiles the highest possible aggregate is 54.
Conclusion
By following the exact steps outlined above, you will be able to learn how to calculate your WASSCE Aggregate score.
Also, to avoid calculating manually you can use WAEC Results Checker’s WASSCE Aggregate Calculator to check your aggregate score.