Christopher Harris is Toby’s best friend and is the only student at Rachel Carson High School who’s grades and test scores match Astrid’s.  They both expect to contend with each other for valedictorian.  Christopher, like Toby is also a licensed pilot. 

Christopher, who doesn’t like to be called Chris, is an African American with short dark hair.  Both his parents work at Maxxim Industries– his father as an engineer and his mother as a chemist.