narrow fail 中文解釋?

英國某些的考試 marking Scheme, 不大清楚現時香港

(1) Pass with merit (2) Pass (3) Narrow fail (4) Fail

There are two fail grades ~ FAIL and NARROW FAIL
Narrow fail 好過 Fail, 但是 Fail 和 Narrow Fail 都是不及格,
Narrow Fail 可以說差少少便及格,

Narrow fail result indicates that the candidate was within 5% of pass boundary.
~ base on Cambridge ESOL

---Should be a limited failure
---a thin failure;
---a fine failure.

應該是縮小失敗的意思