This is how classrooms in the United States have changed because of mass shootings

CNN Chile

Factuality

Ownership

(CNN) — Faced with the growing number of school shootings and the lack of meaningful legislation to curb gun violence, schools and parents are trying to take safety into their own hands. Gun violence has changed daily life inside and outside the classroom, and more and more time and resources are being devoted to preparing for worst-case scenarios. While some school districts are investing in additional security measures, such as easy-to-exit em…