Hi @MarianneBulatao,
I came across this unanswered question while doing a cleanup of the community. As far as I know, once you or your school gives observer/parent access to someone, it can only be removed by the parent or your local Canvas admin team (usually in the eLearning / IT / Digital Education areas). I would recommend reaching out to your college's support team to request removing the observer/parent from your account.
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