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Every fact traces to a published document
Exam facts — question counts, durations, passing scores, content-area weights, fees — come from the certifying body’s own published document. Not from a summary, not from a prep blog, and not from the certifying body’s marketing pages where those disagree with its controlled documents.
Where a body publishes a range, or weighs only its larger units, a single figure shown for it here is ours: the midpoint of the range, or an even split of the larger unit’s share.
Each source document is pinned with a SHA-256 hash. Every month each one is fetched again and compared with its pin; a revised document is flagged with the lessons and questions that cite it, so a quietly changed figure surfaces as a change to check instead of as content that has drifted out of date.
Absent beats wrong
Where a figure is not published, we leave it out and say so rather than repeating a number that circulates without a source. An exam’s scored-versus-pretest question split is a live example: the total is published, the split is not, so we state the total only.
Contradictions are recorded, not resolved silently
Certifying bodies sometimes contradict themselves between a web page and a controlled PDF. When that happens we follow the controlled document and publish the disagreement, so that nobody later "corrects" the right figure back to the wrong one.
Superseded documents are kept for comparison but never cited. A retired blueprint stating a passing score that has since changed is exactly how a wrong number gets a second life.
Corrections
If you find an error, write to support@qualexam.com with the document and page that contradicts us. Corrections are made at the source — in the underlying data — so every page carrying that fact updates at once.