The number of school shootings continues to rise in 2018.

According to non-profit organization Everytown for Gun Safety, a total of 40 shootings have occurred on school campuses across the United States as of May 18.

Friday's deadly shooting at a high school in Texas marks the 41st school shooting.

Take a look at the map for details on each of the shooting incidents so far this year.

The organization defines a school shooting as "any time a firearm discharges a live round inside a school building or on a school campus or grounds."

In other words, this count also includes attempted or completed suicides and accidental discharges.

RELATED: Mass shootings in the U.S.: When, where they have occurred in 2018

A total of 65 shootings were reported on school campuses in 2017.

These incidents, according to Everytown, are collected from media reports and further inquiries.

Everytown for Gun Safety on its website lists itself as "an independent, non-partisan 501(c)(3) organization dedicated to understanding and reducing gun violence in America."