The absolutely true diary as an autobiographical novel

We can deduce that it is an autobiographical book. Indeed, we can find many real elements, as the fact that he's Indian and grew up in the rez of Wellpinit: “for Wellpinit and Reardan, my hometowns” (acknowledgments). He also had a rough childhood: his parents were alcoholics (“Yes dad his a drunk, mum is an ex-drunk” page 46) and as Arnold, he was rejected by the others students(p.21). He was keen on basketball, to become a star-player, Sherman Alexie left the school to go to Reardan (p.45-46). However Sherman Alexie wasn't really born in 1992 (p.17) but on October 7th 1966. Moreover, he never met Penelope she's just a fictional character. “First of all, I ended up having 42 teeth”, he doesn't look like a “slobbering vulture”. Sherman Alexie is always exaggerating for example he says that “My feet were a size eleven in third grade!” (p.3). Sherman Alexie didn't want to become cartoonist, or a basketball player. In the real life, Sherman Alexie wanted to become star, a doctor.
The first sentence of the book said “I was born with water on the brain” That part is true, he was hydrocephalus. But even with this birth problem, Sherman Alexie has been able to make his dreams come true.