Does anyone have more information on the motive behind the shooting? I know many spree killers want fame, but this seems different just because of the lack of motive. Can any locals please fill me in? This has been everywhere on my local news station. (Along with some kid from Palatine IL who was planning a spree killing directed towards Hindu people.)
I already know who the shooter is, a 16-year-old boy who had previously gone to the school. I think it's a Salvador Ramos type of shooting, where he had gotten bullied during his days at the elementary school, but I also won't doubt infamy. 
(...as mentioned in Wikipedia)