Supervision does not mean reading every private conversation or watching over someone's shoulder every minute. It means setting an age-appropriate boundary together, knowing which service is being used, and being close enough to help when something confusing or unsafe appears.
Start with the provider's current age requirements and family controls. Google requires a parent to enable Gemini access for supervised users under the applicable age; OpenAI offers linked teen settings and additional safeguards. Features and terms can change, so check the provider rather than relying on an old setup guide.
Then agree on the human parts: no sensitive personal information, no AI-written assessed work unless the teacher permits and it is disclosed, no public sharing without agreement, and a quick explanation of what the teen asked for and changed. eSafety advises using controls as support for learning, alongside conversation, supervision and joining in online activities.
The next step, if you want it: a free family assessment — about 3 minutes, one named profile, every source linked.