In a supervised Google account through Google Family Link you can decide exactly who can see your child’s Google account. If your child is over 13 anyone that they share their information with can see their Google account. It then depends on the level of information they have associated with their account.
We recommend Internet Matters for further information about Google Docs. Access free
parental control how-to guides to get up to speed on how to set the right level of
protection to give them a fun and safe experience.