The US has averaged more than 100 school shootings a year since 2018 -- see https://k12ssdb.org/all-shootings So, tragically, the surprise would be if a week goes by without a school shooting, since that's an average of 2 shootings per week throughout the year, or 10 shootings a month for the 10 months when school is in session.
The real evil script is the gun lobby's, that convinces us that we need their products.