The main theme is about self - discovery and the search for meaning. The characters are on a journey to figure out who they are and what they value in life.
Yes, it is. John Green incorporated elements from his time in boarding school into the story. It has that sense of authenticity as it reflects on real - life situations like friendship, love, and the search for meaning that he might have witnessed or experienced himself during those years.
Looking for Alaska is definitely fiction. It's a work of the author's imagination, filled with characters and events that are not based on real-life happenings. The plot and settings are crafted to tell a compelling fictional tale.