QS is due to revise curriculum guidance in 2027, with further reform to National 4 and National 5 qualifications set to take place in 2031.
Additional changes to Higher and Advanced Higher assessments are to be brought in by 2032 under current plans.
QS chairwoman, Shirley Rogers CBE, said Page had made a “significant contribution” in his tenure as chief executive.
She added: “Nick has made a real and positive difference at a crucial time for us, not least the replacement of SQA with Qualifications Junkieland.
“He will leave our new organisation in a strong place.”
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