The Icarus show
(Book)

"First published in the United Kingdom in 2016 by David Fickling Books."

Alex Meadows avoids being picked on by never reacting to anything and keeping well clear of the boy next door, David Marsh, who tries to stand up for himself, and so has become an outcast at Lambourn Secondary School--but one day he finds a strange note claiming a boy will fly in his bag, and his nagging curiosity finally forces him out of his self-imposed shell.

600,Lexile.