TPM Livewire

Report: There Have Been At Least 44 School Shootings Since Newtown

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AP Photo

The shooters' ages ranged from 5- to 53-years old, according to the report. In the cases in which the shooter's age was known, 70 percent were minors.

In more than a third of cases, the shooting occurred after a disagreement at or near the school escalated.

Twenty-eight of the shootings took place at a K-12 school and 16 occurred at a college or university.