In the aftermath of school shootings, media outlets often amplify calls for gun control while ignoring or spurning evidence-based ways to protect students. Here are four life-saving tools they are missing or dismissing.

Shatter-Resistant Entryways

As documented in the academic journal Victims & Offenders, an “immediate and economical” way to protect students “is to tighten” access to school buildings. Many school administrators have done this simply by locking doors. However, there are roughly 460 million firearms in the U.S., and the bulk of them will quickly shatter the glass entrances that are a common feature of schools, allowing killers to enter in a few seconds.

That is precisely what happened in the Covenant Christian school shooting in Nashville where the killer took the lives of three 9-year-old children and three staff after shooting out the school’s glass doors and walking into the building:

These and other such tragedies may be prevented if schools took a simple and affordable action: apply a security film that prevents glass entryways from shattering when bullets hit them:

Note that the treatment doesn’t make glass bulletproof or impenetrable. Instead, it makes the glass shatter-resistant. This slows down intruders and affords precious time for students to flee or help to arrive.

Nor does every piece of glass in a school need to be treated. Just installing the film on exterior entryways can substantially improve safety, and selecting other strategic locations can help as well.

Security film is relatively inexpensive and quickly installed. From large public schools to small private ones, the cost of this potential lifesaver is typically less than 1% of a school’s annual budget. Once applied, it lasts for the lifetime of the glass.

For example, it took one day and cost $5,000 in materials and labor to treat a church with more than 20 glass entryway panes on the front, side, and back of the building. Similarly, public school administrators who were hesitant to install security film due to cost concerns found they were able to apply it in a lot more locations than they originally anticipated because it was so affordable.

Don’t Make Celebrities of Mass Murderers

Documenting the impact of this and offering a simple solution, Dr. Peter Langman, a Ph.D. psychologist and one of the world’s leading authorities on the “psychology of school shooters and other perpetrators of mass violence,” writes that:

because of the frequency of mass killers citing previous perpetrators as role models or sources of inspiration, it is critical that media outlets give careful consideration to how they cover such incidents. It seems likely that the more the media focuses on the perpetrators rather than the victims, the more people who are at risk of violence will be influenced to commit their own attacks, whether due to imitation, inspiration, idolizing, perceived similarities, sympathy with the cause, or their desire for fame.

Compulsory Mental Health Treatment

While the vast majority of people with mental illness are not violent, the perpetrators of mass shootings are far more likely to suffer from serious psychiatric disorders than the general population. This is especially true of people who commit indiscriminate mass shootings in which an attacker wantonly kills people in a public setting like a school, park, or church.

A study published in the journal Criminology & Public Policy found that 35% of people who committed indiscriminate mass shootings from 1976 to 2018 had paranoid schizophrenia, and 60% of the shooters “had been either diagnosed with a mental disorder or demonstrated signs of serious mental illness prior to the attack.”

In comparison, less than 1% of the U.S. general population have schizophrenia or a related disorder, and 4.6% of noninstitutionalized U.S. adults have a serious mental illness.

Perhaps more telling, the Journal of Clinical Psychopharmacology published a study of people who committed a mass shooting from 1982 to 2019 and survived. The study focused on the survivors, as opposed to those who died, because the ensuing legal proceedings revealed “the most reliable psychiatric information.” Among the 35 mass shooters who survived, 51% had schizophrenia, and 80% had a psychiatric diagnosis.

It is important to understand that correlation does not prove causation, but there is a very strong correlation between the rise of indiscriminate mass shootings and the mass deinstitutionalization of psychiatric patients that occurred in the U.S. from 1955 to around 2010.

During that period, the portion of the U.S. population in public psychiatric hospitals declined by 96%. Highlighting the implications of this, a 1997 academic book about “America’s mental illness crisis” explains:

Over the periods before, during, and after the U.S. experiment in mass deinstitutionalization, the rates of indiscriminate mass shootings sextupled:

Moreover, the U.S. has one of the lowest rates of psychiatric institutionalization in the developed world, and Japan’s rate is about 10 times greater

Arming Selected Teachers

Despite claims that arming teachers would be too costly, it would amount to a drop in the bucket of current school spending. Even under a high-cost scenario where teachers receive five times more gun training than police and are well paid for their training time, the annual cost of equipping, training, and supervising one out of five teachers would be about 1% of government spending on schools.