Are school windows bullet proof?

Currently, most school windows are not bulletproof. The vast majority of schools in the United States use standard tempered safety glass or even annealed glass, especially in older buildings. While tempered glass is safe because it doesn't break into sharp shards, it provides zero protection against bullets and very little resistance to forced entry. However, there is a growing national trend toward 'hardening' schools, which involves upgrading windows and door glazing to ballistic-resistant or at least forced-entry-resistant standards. Many schools are now opting for security films or retrofitted systems like Riot Glass, which are more affordable than full ballistic glass replacement but still offer a massive increase in security. These upgrades are often focused on 'high-vulnerability' areas like main entrances and ground-floor windows. While the cost of making every window in a school bulletproof is often prohibitive, targeted installations in key areas can significantly improve overall safety.