WAEC and NECO grading system explained: A1 to F9 and what counts as a credit
What each WAEC and NECO grade means, the usual score ranges, which grades count as credits for admission, and how universities read your O'level result.
By the Levia editorial team · Updated 27 October 2026 · 4 min read
When WAEC or NECO results are released, you'll see a letter and a number against each subject: A1, B3, C6, F9. Understanding exactly what those grades mean, and which ones count for admission, helps you plan your resits, your JAMB application and your choice of course.
The nine grades
Both WAEC (WASSCE) and NECO (SSCE) use the same nine-point grading scale:
| Grade | Meaning | Typical score range | Counts as credit? |
|---|---|---|---|
| A1 | Excellent | 75–100% | Yes |
| B2 | Very good | 70–74% | Yes |
| B3 | Good | 65–69% | Yes |
| C4 | Credit | 60–64% | Yes |
| C5 | Credit | 55–59% | Yes |
| C6 | Credit | 50–54% | Yes |
| D7 | Pass | 45–49% | No |
| E8 | Pass | 40–44% | No |
| F9 | Fail | 0–39% | No |
The score ranges shown are the widely published guide. The examination bodies may moderate grading for a particular paper, but the grade-to-meaning relationship stays the same.
Credit versus pass: why the difference matters
This is where many students get confused. A pass is not enough for admission.
- A1 to C6 are credit passes. These are what universities, polytechnics and colleges of education count.
- D7 and E8 are ordinary passes. They show you passed the subject but do not meet "credit" requirements.
- F9 is a fail.
So when an admission requirement says "five credits including English Language and Mathematics", you need C6 or better in each of those five subjects.
What universities usually require
For most degree courses in Nigerian universities, the minimum O'level requirement is:
- Five credit passes (C6 or better),
- including English Language and Mathematics,
- in subjects relevant to the course (for example, Biology, Chemistry and Physics for Medicine),
- obtained in not more than two sittings.
Some competitive courses or institutions insist on one sitting, and some set higher grade requirements. Polytechnics and colleges of education have broadly similar requirements, sometimes with more flexibility for certain programmes.
One sitting versus two sittings
A sitting is one examination series. Combining results from two sittings means using, for example:
- a WAEC May/June result and a NECO June/July result from the same year, or
- a school WAEC result and a later private-candidate WAEC result.
Most institutions accept two sittings, which is why many SS3 students sit both WAEC and NECO: if a subject goes badly in one, the other may cover it. However, check whether your course requires one sitting before relying on a combination.
How your grades affect admission
Your O'level grades matter in two ways:
- Eligibility. Without the required credits you cannot be admitted, no matter how high your UTME score.
- Ranking. Some universities add points for O'level grades in their admission aggregate (for example, more points for A1 than for C6). In these cases, better grades directly improve your chances.
Our guide to calculating your Post-UTME aggregate shows how some universities convert O'level grades into points.
What to do if you are missing a credit
If you have a D7, E8 or F9 in a subject your course requires:
- Resit the subject in the WAEC private candidates' examination or NECO External, usually held later in the year.
- Check whether a second sitting is acceptable for your course and institution.
- Prepare properly this time. Look at which paper cost you the most marks (objective, theory or practical) and focus there.
You can apply for JAMB while awaiting results, but you must have the required credits before you can be admitted.
Understanding "awaiting result"
When you register for JAMB before your WAEC or NECO results are out, you can indicate that you are "awaiting result". Once results are released, you must upload them to your JAMB profile (usually through JAMB's O'level upload process at a CBT centre or as directed by JAMB). Admission cannot be processed without your O'level result on your profile.
How to check your result
- WAEC: use the official WAEC result-checking portal with your examination number, year, examination type and a result checker PIN.
- NECO: use the official NECO result portal with your examination number, year, series and a result-checker token.
Keep your examination numbers safe. You will need them for JAMB, admission screening and certificate verification for years to come.
Aim higher than C6
A C6 meets the minimum, but higher grades give you more options:
- They improve your ranking where grades are scored.
- They make you competitive for scholarships.
- They signal that you have truly mastered the subject, which makes university courses in that subject easier.
The surest way to raise your grades is consistent practice with understanding, not memorising. Levia's WAEC and NECO subjects are structured into five levels, with a plain explanation after every question, to build exactly that kind of understanding.
Try the real Level 1 question set free — no account needed — with an explanation after every question.
Levia is an independent learning platform, not affiliated with JAMB, WAEC, NECO or any examination body. Exam formats, dates and fees can change — always confirm current details on the official body's website.