When you took it, you weren't part of this SMPY cohort starting in the 1970s. Most of these kids certainly were not taking 'math competitions' or 'private tutor

When you took it, you weren't part of this SMPY cohort starting in the 1970s. Most of these kids certainly were not taking 'math competitions' or 'private tutors', they were languishing in regular classes, and that's why Stanley used the SAT-M.