S.H.
Boy, isn't she a resourceful Mom? She probably does this a lot... or will as her kid moves up through grade levels.
Sheesh.
How convenient for her....
Okay, so REALLY think about, what if something happens to her son while in your care or car?? And, no written 'contract' was actually signed. It is just all by mouth... and there is liability....
Bottom line, is Liability.
AND that you are an "Employee" of a school.... not her Nanny.
good luck,
Susan