What about simply helping your child with their homework at all? That could also count as cheating if you go with a strict interpretation.
Having access to people who can sit down with you and explain things to you when you get stuck, or who can point out mistakes in your existing understanding or your work, can make a huge difference in the outcomes of students.
If AI gets good enough to fill that role, everyone can have that access (or at least something close enough).
> who can sit down with you and explain things to you when you get stuck, or who can point out mistakes in your existing understanding or your work
That being said, I don't see why what you describe would require AGI. It won't be an excellent teacher or tutor in those tasks, but it may be good enough and make up in the price, availability and repetition.