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Key points:
During a school emergency, every minute that passes is crucial, but in those moments, a reliable connection can mean the difference between confusion and coordinated response. Yet, across the country, there is an unseen danger confronting school staff, students, and emergency personnel. This is inadequate communication connectivity within school buildings.
For years, schools have implemented fortified doors, cameras, and lockdown exercises. This is because communication is the unseen link that connects each safety measure. However, communication can weaken once someone enters a structure composed of concrete, steel, and reinforced glass. This is unacceptable during a time when almost every call to 9-1-1 is generated by a cell phone.
The changing face of emergency response
More than 75 percent of emergency calls now come from wireless phones, according to the Federal Communications Commission. When something goes wrong in a classroom or gym, the first instinct isn’t to reach for a landline–it’s to pull out a smartphone.
But what happens when that signal can’t get out?
This problem becomes even more pressing as the nation moves toward Next-Generation 9-1-1 (NG911), a major upgrade that allows dispatchers to receive text messages, images, and even live video. These new capabilities give first responders eyes and ears inside the building before they arrive–but only if the network works indoors.
At the same time, new laws are raising the bar. Alyssa’s Law, named after Alyssa Alhadeff, a student killed in the 2018 Parkland school shooting, requires schools in several states to install silent panic alarms directly linked to law enforcement. Similar legislation is spreading nationwide. These systems rely on strong, reliable indoor wireless coverage–the very thing many older buildings lack.
When walls become barriers
School buildings weren’t designed for today’s communications reality. Thick concrete walls, metal framing, energy-efficient glass, and sprawling multi-story layouts often block or weaken wireless signals. During an active-shooter event or a tornado warning, students may shelter in basements, cafeterias, or interior hallways–places where signal strength is weakest.
After several high-profile incidents, post-incident reports have revealed the same pattern: first responders losing radio contact as they entered, dispatchers unable to locate or communicate with callers, and delays caused by poor in-building connectivity. These breakdowns aren’t just technical–they’re human. They affect how quickly students are found, how fast responders can coordinate, and how well lives can be protected.
Technology that saves seconds–and lives
Fortunately, there are solutions available, and they are becoming more accessible.
The Emergency Responder Radio Coverage Systems (ERRCS) can also be referred to as Distributed Antennas Systems (DAS) within a public safety setting. The technology is responsible for extending radio communication coverage within building infrastructures. ERRCS are required within schools due to measures put into place within fire regulations.
For communication and safety needs, cellular DAS, also known as small cells, are required to expand cellular coverage on a campus. These enable students, faculty, and staff to make calls, send texts, and exchange vital multimedia messages to 9-1-1 dispatchers, which is crucial during the NG911 era.
Despite such technologies, smaller schools on more limited budgets can still leverage signal boosters and repeaters to fill coverage gaps within gyms, cafeterias, and other similar areas. At the same time, newer managed Wi-Fi solutions that offer E911 functionality can serve as a backup safety net that can transmit multimedia messages over secure Internet communications when cellular connectivity is no longer available.
Best practices for schools
Start with a coverage assessment. A comparison of where signals are dropping, not only for public safety communications but generally across each of the main cellular providers, will provide school administration with information on where to make improvements.
Schools should then coordinate with the fire departments, the office of emergency management, and wireless service providers prior to implementing any system. This will ensure that they comply with local regulations and interoperability with first responders.
Finally, maintenance and functionality are just as important as final installation. Communication systems should receive periodic tests, preferably during safety drills to verify that they work well under stress.
Bridging the funding gap
Improving in-building communications infrastructure can sound costly, but several funding pathways exist. Some states offer school-safety grants or federal assistance programs that cover technology investments tied to life safety. Districts can also explore partnerships with local governments or leverage E-rate-style funding for eligible network upgrades.
Beyond compliance or funding, though, this is an equity issue. Every student, teacher, and responder deserves the same chance to communicate in a crisis–whether in a small-town elementary school or a large urban high school.
A call to action
A school is more than its classrooms and hallways, it is also a community of individuals each relying on others during times of fear and uncertainty. Perhaps one of the most straightforward ways to make this community more resilient is to provide a strong indoor building communication environment, both for public safety communications and cellular devices.
The time has come to make connectivity a vital safety component rather than a luxury, because silence is simply not an option when seconds are at stake.
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Payam Maveddat, Wilson Connectivity
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