For arugement sake, what are you going to do
if your kid get you read their essay? If you don't like what your kid wrote, are you going to force them to re-write it to meet your expectation?
It is about them and who they are. Typically, they will have the English AP teacher read them to change the grammatic errors.
If they take your idea, then technically they are cheating. Because it will be your essay instead of theirs.
I did not read single one of my daughter's essay before all her admission results are in