That's what I thought at first also. But the test is adaptive, so if you score well on the first part of the math, for example, they give you harder questions i

That's what I thought at first also. But the test is adaptive, so if you score well on the first part of the math, for example, they give you harder questions in the second part. In theory, it should actually be possible to make the test harder than it was before, using this framework.