So she broke from her normal habits and shared a strong message calling for more security at schools.
Horton advocated for schools to be on permanent lockdown and having outsiders not be able to even make it past the front door. Metal detectors, school uniforms, clear backpacks (or no backpacks) are worthwhile ideas, she wrote.
The Newtown shooting "was the most disgusting thing I have seen in my life. I couldn't help but post something about it," she said.
Like many others who jumped into the conversation, Horton was surprised by the large response she received.
"I feel that as a parent and teacher, it was something that needed to be said," she said.