The query is an alphanumeric string. A standard designation with its process and position letters means nothing outside this trade, so a page carrying that exact string competes against almost nothing and is found by the only people who could ever want it.
Many searchers do not want teaching at all. A time-served welder needs to sit a test and be certified, not to be shown how to strike an arc, and a school that offers test-only dates reaches a market that ignores every course page.
Failing is searched before booking. What happens if the test piece is rejected, how quickly it can be repeated and what a retest costs is read carefully by somebody about to risk a day of wages on it.
Renewals are a recurring search. A welder whose approval expires next month is looking for the earliest available test, and being visible for that brings back people who trained elsewhere.