To the people who think this is not serious... these tests are also used to determine who does or does not get scholarships.
A full ride scholarship means you do not pay for tuition, books, or even living expenses, if you live in a dorm. Lesser scholarships may only cover tuition + books, or tuition.
Still, given all the bitching about student loan debt: consider that these people, *minimally* get out with one year less of loan debt.
If they can additionally either keep their grades up themselves, or have someone do it for them, they can keep renewing the scholarship, and graduate with zero loan debt, compared to the rest of the schlubs who are coming out with a quarter million or more in student loan debt.
Further, fraudulently obtaining a scholarship this way means one less scholarship for a truly academically gifted person, who ends up paying the freight themselves, and if they do not come from a silver spoon background, it means they graduate with debt they would otherwise not have had. Even if they are a silver spoon case, they've lost the time value of money spent out of pocket, which translated to a smaller inheritance/trust fund/whatever.
This is, in fact a big deal. We are talking really large amounts of money here.
As a final consideration, this: the people taking these tests over and over for different people each time: they've had a *hell of a lot* of practice at this point. They are likely very, very good at it.