Complex sentence: During the rest of the school year, Auggie is continually bullied by Julian and his group; they leave hurtful notes on his desk and tape a class picture to his locker in which Auggie is deliberately photoshopped out.
Split into simpler sentences: During the rest of the school year, Auggie is bullied by Julian and his group. They begin to leave bullying notes on his desk and tape a class picture to his locker where Auggie is purposefully Photoshopped out.