Checkers are "ad-hoc" members of staff employed by WAEC to go through result sheets and and candidates' scripts. They are usually secondary students on holiday, teachers, undergraduates, youth corpers, and so on. They ensure that the scores recorded by markers for candidates are summed up properly and equal the total recorded. For example, it is the duty of the checker to ensure that a candidate that attempted five questions with the following scores, 10, 15, 10, 5 and 10, had 50 given to him as his total score. Where the marker (whom the checker does not know) failed to do this, or, say, gave the candidate a score above or below 50, the checker takes the script to any of the WAEC official who corrects it and enters the right score in the result sheet.
In some cases, the mistake (which in anyway the checker is employed to detect) resulting from the marker, may not be with scores, but the names of the candidates. Some years ago while checking, I discovered that the marker wrongly entered the scores of two candidates, with the same names (Usman Abdulahi) and examination numbers (127 and 128) following each other.
There was a case of a candidate whom the marker wrongly gave 15 instead of 51.
While doing checking some years ago, I discovered how evil some checkers were. When they are supposed to check the scripts one after the other against the mark sheets, they gather, say, up to twenty scripts and tick the answer sheets and as though everything is properly checked. In some cases, the checker takes out just the answer sheets from the envelop, ticks them without checking the scripts. There was a day that one of the checkers was reprimanded by an examination officer who was looking at him while ticking an answer sheet without checking the scripts. She told him he was playing with people's future.
As I got to know that WAEC scripts are being marked, and will soon be checked, I decided to ask, how can WAEC ensure that checkers and markers do their job properly?

we know now...we know

we are just praying that Sai Baba gets the chance to settle down and the nerves to tackle education sector "Untouchables" like WAEC, JAMB etc

Unbundle the whole lot of them

if nor be conspiracy, how would mass failure be the national anthem of SSCE level exams? By what indices are they taking the measure of things?

The past administrations simply left them to run amok, doing anything they wanted with students' futures because they themselves had no robust growth plan for the education sector.
If not of late in the Jonathan, administration, were they building schools or tasking state-level leadership to do same.....was it not ASUU/ASUP strike this or that everyday?

Dey had nowhere to put the 1M plus UTME-level admission seekers we were turning out yearly and couldnt be bothered about investing all their stolen oil-blocks money in the Naija Education sector so they relied on JAMB & co to keep "jamming" the poor kids,, diarrrriss God o.

BTW
No kid of mine's schooling here, period!

This happens not only in WAEC, but also NECO.

Ishilove and Lalasticlala.