This year has been one of the deadliest in history across campuses nationwide. According to reports, there have been over 50 shootings so far this year on school properties in 2015.
See a timeline below of the school shootings that left students or faculty dead or wounded this year. In our timeline, we didn't include accidental shootings, suicides where no other people were hurt, or shootings that happened on weekends not involving students or faculty.
Clint Davis is a writer for the E.W. Scripps National Desk. Follow him on Twitter @MrClintDavis.