There have been some claims in the past that. The sorting hat knows when you’re being insincere! Web the simple answer to the question is no, you can’t retake the quiz if you’ve already taken it on that account.
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Can You Retake Pottermore House Test? TechCult
Overall, there are 28 questions, but you will only answer 8 of them.
This may prove useful if you’re convinced you’re meant to be in a different hogwarts house than the one you got the first time.