How ZIMSEC Grading Works: O Level and A Level Explained
ZIMSEC reports results subject by subject on a letter scale, not as a single overall mark. O Level and A Level use different scales, and neither one runs down to G, a common mix-up with the Cambridge GCE A to G scale used elsewhere. Here is what the ZIMSEC letters mean.
O Level grades
O Level subjects are graded A, B, C, D, E, or U for ungraded (below E standard).
A grade of C or better is commonly referred to as a credit pass. The benchmark most schools and employers cite for a full O Level certificate is 5 subjects at C or better, including English Language.
Grade boundaries are set per subject and per sitting, so the safest way to confirm exactly where a grade falls is your official result slip or ZIMSEC directly.
| Grade | What it means |
|---|---|
| A | Highest pass |
| B | Pass |
| C | Pass (credit pass, the common certificate benchmark) |
| D | Pass |
| E | Lowest pass |
| U | Ungraded, below E standard |
A Level grades
A Level subjects are graded A to E as pass grades, each carrying UCAS-style points (A = 5 down to E = 1), with O for a subsidiary pass and F/U for a fail.
A grade of O means the candidate passed at O Level standard rather than at the full Advanced Level standard. A grade of F or U means the candidate did not attain a pass at Advanced Level; per ZIMSEC's own Guidelines for Results, an F grade is not shown on the certificate.
| Grade | Points | What it means |
|---|---|---|
| A | 5 | Highest pass |
| B | 4 | Pass |
| C | 3 | Pass |
| D | 2 | Pass |
| E | 1 | Lowest pass |
| U | 0 | Unclassified |
Why the combination matters
Most next steps, whether that is A Level, a college programme, or a job, look at a specific combination of subjects and grades rather than a total subject count. English Language and Mathematics passes are commonly required alongside subject-specific requirements.
Always check the exact requirements with the school, college, or employer you are applying to, since they can differ even for similar-sounding programmes.
Frequently asked questions
What counts as a pass in ZIMSEC O Level?
A grade of C or better is generally treated as a credit pass. The commonly cited benchmark for a full certificate is 5 subjects at C or better including English Language, but what you actually need depends on what the result is for, so confirm with the specific institution or employer.
Do I need to pass every subject I sit?
No. ZIMSEC reports each subject separately, and most next steps only require passes in a particular combination, most commonly including English Language and Mathematics.
Does ZIMSEC O Level go down to a G grade?
No. ZIMSEC O Level grades run A, B, C, D, E, with U for ungraded. An A to G scale is used by Cambridge GCE O Level, not ZIMSEC.
