Nine years ago, twenty students and six adults were killed in the shooting at Sandy Hook Elementary School. For many of us, it changed the way we view our jobs, our well-being and our students’ safety forever. Below we’ve gathered just a few of the tweets that describe how teaching has changed since that horrible day.

If this is a hard day for you, you are not alone. You are in our hearts, along with the families and friends of the victims. The following tweets touch on violence and the events that occurred, so please keep that in mind before reading.

“Teaching was never the same”

“‘Intruder’ drills are the worst days of each school year for me.”

“I had a kid threaten to bring a gun to school because I told him to take his headphones out.”

“I was more worried about my students’ safety than their academic success.”

“I don’t want to lose my future students. I don’t want to lose my future coworkers.”

“Fearing the worst has been a part of my career since before it began.”

“I never let my phone get down below 80%.”

“Is it going to happen here?”

“It is my unspoken responsibility to be prepared to pay the ultimate price.”

“Sandy Hook forever changed me as an educator.”

10 Tweets That Capture How Sandy Hook Changed Teaching Forever