What is this? High school grades on the AMCAS?!?

Hey, could someone please explain this to me? I was glancing over a sample AMCAS and I saw high school courses listed. Do they really look at high school grades? If that's the case, bye-bye Hopkins. I sucked in high school (pulled some C's), but have a 3.97 in college.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums