# mark one's own homework

idiom

Source: https://englishreference.com/idiom/mark-ones-own-homework
Updated: 2026-08-10

## Meaning

To assume the role of evaluating one's doings when a disinterested party is required.

## Examples

- You cannot mark your own homework when judging this contest.
- The committee refused to accept the report because the manager was essentially marking his own homework.
- It undermines the integrity of the entire regulatory process when a corporation is permitted to mark its own homework regarding safety standards.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.