"There're so many. It's like, I can't believe there's another one."

Retired middle school teacher Norma James is referring to school shootings.

This year, there were more school shootings and more deaths from those shootings recorded than any other year in the U.S.

One of the deadliest shootings in U.S. history unfolded at Sandy Hook Elementary School. That was six years ago Friday.

James remembers finding out about that shooting while coming back from a field trip with her students.

"We had this real moment of dissonance where your kids are singing and so excited after having a big trip, and you're reading the most horrible thing you can imagine," she said.

In 2012, 26 people died on that tragic day in Connecticut. It marked one of 18 school shootings that year.

In 2018, 96 shootings in schools were recorded.

The Center for Homeland Defense and Security recorded those numbers based on publicly available data. These totals also include accidental shootings, suicides, and cases where no one was killed.

While gun violence is becoming more common, a group called Moms Demand Action isn't slowing down on their goal to stop these deaths.

"Every year we come together to remember those lost to gun violence on that day," said Kendra Straub, co-leader of the East Tennessee chapter of Moms Demand Action.

The group formed the day after the Sandy Hook shooting. A mom didn't want to see that type of tragedy happen again, so she started making change.

Read more from WBIR's website.