What is an example Krakauer gives of Chris' strong will at a young age?

From the text:

In the third grade, after receiving a high score on a standardized achievement test, Chris was placed in an accelerated program for gifted students. “He wasn’t happy about it,” Billie remembers, “because it meant he had to do extra schoolwork. So he spent a week trying to get himself out of the program. This little boy attempted to convince the teacher, the principal—anybody who would listen—that the test results were in error, that he really didn’t belong there.