How education changes what a reasoning test measures
Schooling teaches the format as much as the content: timed multiple choice, elimination strategies, algebraic notation, reading dense instructions quickly.
The measured effect
Studies of extra schooling consistently find gains of a few IQ points per additional year, concentrated in exactly the item types that resemble classroom work.
Why we split the norm tables
Without an education adjustment, a postgraduate and someone who left school at 15 are compared as though both had the same practice with the format. That measures access, not reasoning.
What it does to your result
A higher education level raises the expected mean for your group, so the same weighted score yields a slightly lower IQ figure. That is the adjustment working as intended.
Scored against age, education and area norms. Free certificate with a QR code anyone can verify.
Questions people ask
Does this penalise educated test takers?
It holds them to the standard of their own group rather than an easier one.
Which level should I choose?
The highest level you have completed, not one in progress.