A locked door is an important part of school security, but it is only one layer of protection.
When schools discuss security, attention naturally focuses on what happens inside the building. Locked exterior doors, visitor identification, controlled access, and emergency response procedures are all essential components of a comprehensive school safety plan.
However, maintaining a secure school environment also requires awareness of what is happening outside the building.
Recent school safety incidents remind us that potential threats may develop on or near school grounds before anyone tries to enter the building.
Recognizing unusual activity early and communicating concerns promptly gives school officials valuable time to assess the situation and take appropriate action.
Perimeter Awareness Is More Than Monitoring Entrances
A school's perimeter includes more than its exterior doors.
Parking lots, playgrounds, athletic fields, bus loading areas, sidewalks, and other outdoor spaces are all part of the school environment.
These areas can be particularly challenging because they are often active throughout the school day. Deliveries arrive, visitors approach, maintenance personnel work outside, and students transition between activities.
With so much routine activity, unusual behavior can sometimes go unnoticed.
The goal of perimeter awareness is not to treat every unfamiliar person or vehicle as a threat. Rather, it is to recognize when something appears inconsistent with normal school activity and ensure that concerns are appropriately reported.
What Should School Staff Look For?
School employees are not expected to act as security officers. However, they can provide an additional layer of awareness simply by paying attention to their surroundings.
Potential concerns may include:
Individuals lingering near school grounds without an apparent purpose.
Vehicles repeatedly circling or remaining in unusual locations.
People approaching playgrounds, athletic fields, or other student activity areas unexpectedly.
Individuals attempting to access restricted portions of school property.
Exterior doors or gates that have been left unsecured.
Unusual behavior or activity that raises a reasonable safety concern.
No single observation necessarily indicates a threat. Context matters, and school staff should follow established reporting procedures rather than investigating suspicious behavior themselves.
Early Reporting Can Make a Difference
One of the most important aspects of perimeter security is communication.
An employee who notices concerning activity should know exactly whom to notify and how to report the information.
A useful report should include the location, a description of the observed activity, and any relevant details that can be safely obtained.
Staff should not approach or confront potentially dangerous individuals or place themselves at risk to gather additional information.
When there is an immediate threat, activate established emergency response procedures without delay.
The objective is simple: Recognize the concern, report it promptly, and allow the appropriate personnel to assess and respond.
Perimeter Security Is a Shared Responsibility
School Resource Officers, security personnel, and administrators play important roles in maintaining a secure campus.
However, no single individual can continuously observe every part of a school property.
Teachers supervising recess, staff monitoring student arrival and dismissal, custodians working near exterior entrances, and employees moving between buildings may all observe something that deserves attention.
This does not mean adding security duties to an already demanding school day.
It means reinforcing a simple expectation: When something seems unusual or concerning, don't assume someone else has already noticed it.
Report it.
Building Awareness Through Consistent Reminders
Don't discuss perimeter awareness only after a serious incident.
Like many school safety practices, it works best when expectations are communicated and reinforced regularly.
Brief reminders can help staff understand what to look for, when to report concerns, and how their observations contribute to the school's overall security.
These conversations also give administrators opportunities to review reporting procedures, clarify responsibilities, and address potential vulnerabilities before an emergency occurs.
A secure school building is important. Awareness of what is happening outside that building is equally important.
The Bottom Line
Effective school security requires multiple layers of protection.
Controlled access, trained personnel, emergency procedures, and physical security measures all contribute to a safer learning environment.
Perimeter awareness supports these measures by encouraging staff to recognize and communicate potential concerns before they escalate.
No school employee can be expected to prevent every incident. But every employee can contribute to a culture where awareness, communication, and prompt reporting are part of everyday school operations.
School security doesn't stop at the front door. Neither should our awareness.
Keeping School Safety Front and Center
𝐒𝐚𝐟𝐞𝐒𝐜𝐡𝐨𝐨𝐥𝐬 𝐌𝐢𝐧𝐮𝐭𝐞™ helps school leaders reinforce practical safety habits with short, ready-to-share weekly reminders for staff.
From perimeter awareness and visitor management to lockdown procedures and emergency preparedness, the program keeps important safety expectations visible throughout the school year without adding meetings or additional training requirements.
One Minute. One Topic. Every Week.
Learn more at www.safeschoolsminute.org
Mr. Dave
School Security Specialist
Creator of SafeSchools Minute™