How Many AEDs Should a School Have?

A school with 1,000 students in a single building will have different needs from one with the same number of students spread across several classroom buildings, sports halls, and outdoor facilities. Before deciding how many AEDs to purchase, schools should assess their campus layout, identify suitable locations for the devices, provide CPR and AED training, and test how quickly the equipment can be accessed in a real emergency.

1. Why Should Schools Have AEDs?

AEDs can play an important role in a school's response to cardiac arrest, particularly when they are incorporated into a broader emergency response plan that includes CPR and procedures for contacting emergency medical services.

Sudden cardiac arrest can occur in many different settings, and schools present their own challenges. Large numbers of students and staff may be present at the same time, people are often spread across different areas, physical activities take place on sports fields or in gymnasiums, and school facilities may remain in use well beyond regular teaching hours.

An automated external defibrillator (AED) uses electrode pads placed on the chest to analyse the heart's electrical activity. It is more than simply a device that delivers an electric shock. An AED analyses the heart rhythm and advises a shock only when it detects a rhythm that requires defibrillation. If a shock is not indicated, the device will not deliver one. Instead, it provides visual and audio instructions to guide the responder through cardiopulmonary resuscitation (CPR).

This makes AEDs valuable tools for people providing immediate assistance while waiting for professional emergency medical services to arrive.

However, an AED does not replace CPR. When responding to cardiac arrest, CPR and early defibrillation, when indicated, must work together as part of a coordinated emergency response.

Image: AED placement in schools should be based on practical accessibility and supported by CPR training and clear emergency response procedures.

2. Should the Number of AEDs Be Based on Student Numbers?

The number of AEDs a school needs should not be determined solely by student enrolment or the total number of people on campus.

Consider two schools, each with approximately 1,000 students and 100 teachers and staff members:

• School A has a compact campus, with most classrooms located in one building and sports facilities close to the central area.

• School B has several separate classroom buildings, a dedicated sports complex, a multipurpose hall, and facilities located some distance apart.

If student numbers were the only consideration, both schools might be advised to install the same number of AEDs. In practice, however, the accessibility of those devices could be very different.

A more useful question is how quickly and easily an AED can reach someone who needs it.

To answer this, schools should consider the size and layout of their campus, the number of buildings and floors, access routes, security-controlled doors, stairs, lifts, and the areas where people spend most of their time.

3. What Factors Determine How Many AEDs a School Needs?

3.1. Campus Size and Layout

Campus size and the distance between facilities are important considerations when planning AED placement.

Schools consist of much more than classrooms. Depending on the institution, the campus may include administrative offices, libraries, laboratories, cafeterias, football pitches, sports grounds, gymnasiums, auditoriums, dormitories, and areas used for extracurricular activities.

When these facilities are located close together, a centrally positioned AED may be relatively easy to access.

However, on a larger campus, bringing an AED from the administrative building to a distant sports field or classroom block could take considerably longer.

Schools should therefore prepare a campus map and identify locations where large numbers of people gather or where physical activities regularly take place.

This provides a practical basis for deciding whether one AED location is sufficient or whether additional devices may be needed.

3.2. Number of Buildings and Floors

The number of buildings and floors does not automatically determine how many AEDs a school needs, but it can have a significant impact on response time.

For example, a three-storey school does not necessarily need an AED on every floor. However, if the only AED is located on the ground floor while many students and teachers are on the third floor, the school should assess how quickly the device could be brought upstairs during an emergency.

The same principle applies to schools with several separate buildings. Rather than assuming that one AED in the main building can serve the entire campus, each area should be assessed individually.

Long corridors, staircases, lifts, locked doors, and restricted-access areas should all be taken into account.

4. Where Should AEDs Be Placed in Schools?

When choosing AED locations, schools should focus on three main considerations: visibility, accessibility, and the area each device needs to cover.

The school medical room may seem like a natural choice, particularly because it is often staffed by someone responsible for student health.

However, it should not automatically be considered the best location.

If the medical room is far from sports facilities, a multipurpose hall, or another classroom building, retrieving the AED could take longer than necessary.

Depending on the campus layout, schools may consider placing AEDs in administrative areas, central lobbies, main corridors, sports facilities, or locations where staff are regularly present.

Just as importantly, teachers, staff, security personnel, and designated first responders should know exactly where the devices are kept.

An AED should never be stored somewhere known only to one person or department.

If an AED cabinet is used, it should be clearly marked and allow the device to be retrieved quickly. While protecting the equipment from damage is important, locking the cabinet or introducing other access restrictions should not delay someone trying to retrieve it during an emergency.

5. Should Sports Facilities Be Prioritised When Placing AEDs in Schools?

Sports facilities should be among the priority areas considered when planning AED placement. However, schools should not focus exclusively on sports grounds while overlooking classrooms and other areas used for daily activities.

Football pitches, gymnasiums, physical education facilities, and other sports venues may accommodate large numbers of students, teachers, and athletes at particular times.

When assessing these locations, schools should consider both how frequently they are used and how many people are likely to be present.

For example, if a sports field is located a considerable distance from the main school building, it may need its own AED access arrangement rather than relying entirely on a device stored in the medical room.

On the other hand, if the sports field is close to a central building and can be reached quickly, one well-positioned AED may provide adequate coverage, provided this has been confirmed through practical testing.

The key is to assess accessibility under normal operating conditions rather than applying the same placement formula to every school.

6. How Should CPR and AED Use Be Incorporated Into a School's Emergency Response Plan?

Schools should approach CPR and AED use as parts of the same emergency response process, rather than treating them as separate skills or procedures.

A typical emergency response scenario may follow these steps:

Recognise an unresponsive person → Assess the situation → Call emergency medical services → Begin CPR → Have another person retrieve an AED → Attach the electrode pads → Allow the AED to analyse the heart rhythm → Deliver a shock if advised → Continue CPR and coordinate with emergency medical personnel.

Each person involved has a different role.

The responder attending to the person in cardiac arrest focuses on CPR and follows the AED's instructions. Another person contacts emergency medical services, while someone else retrieves the AED.

Other staff members may help clear access routes and guide emergency responders to the correct location.

Assigning these responsibilities in advance helps prevent a situation where several people gather around the casualty but no one takes responsibility for calling emergency services or bringing the AED.

CPR and AED use should therefore be regarded as interconnected elements of the school's cardiac arrest response system, rather than two independent procedures.

7. Who Should Receive CPR and AED Training at School?

Schools should avoid relying on just one trained person to handle emergencies.

Instead, they should develop a team of staff members who can respond in different locations and at different times.

This core team may include school nurses, physical education teachers, administrative staff, security personnel, and employees who regularly supervise busy areas.

Where schools host extracurricular activities or events outside normal hours, emergency preparedness should also account for the staff members present during those periods.

Training should cover how to recognise a medical emergency, activate emergency medical services, perform CPR, and use an AED.

Practical sessions should recreate realistic situations rather than focusing only on how to switch on the device.

The aim is to ensure that staff know where the AED is located, how to operate it, who should call emergency services, who should perform CPR, and how to work together effectively.

8. How Can Schools Determine the Right Number of AEDs?

Instead of calculating AED numbers based on enrolment, schools can take a coverage-based approach.

A practical assessment can be carried out in four steps.

Step 1: Map the campus.

Identify all buildings, classrooms, sports grounds, auditoriums, cafeterias, and other areas where students or staff are regularly present.

Step 2: Identify potential AED locations.

Mark suitable positions such as the medical room, main lobby, central areas, or sports facilities.

Step 3: Test access routes.

Starting from the areas farthest from a proposed AED location, check the actual route needed to retrieve the device and bring it to someone requiring assistance.

Step 4: Conduct practical simulations.

Run emergency scenarios in different parts of the campus to identify areas where AED access may be delayed or difficult.

If reaching an AED consistently takes too long, or if access routes are frequently obstructed, the school may need to install an additional device or relocate an existing one.

This approach focuses on actual emergency response capabilities rather than simply counting students.

The following table provides a starting point for assessing AED placement in different school environments.

9. AED Readiness Checklist for Schools

Before purchasing additional AEDs, schools should review their existing emergency preparedness arrangements.

• Has the entire campus been mapped?

• Have individual buildings and sports facilities been assessed separately?

• Do teachers and staff know where the AEDs are located?

• Can an AED be retrieved without relying on one specific person?

• Are AED signs clearly visible and easy to recognise?

• Have retrieval times been tested from the most distant areas?

• Are there staff members trained in CPR and AED use in key locations?

• Is there a clear procedure for contacting emergency services and assigning someone to retrieve the AED?

• Are the AED electrode pads within their expiry dates and compatible with the device?

• Are the AED batteries in usable condition according to the manufacturer's instructions?

• Are AEDs inspected regularly?

• Has the emergency response plan been tested through practical drills?

If several answers are "no", purchasing more AEDs may not be the only issue to address.

The school may also need to improve device placement, accessibility, staff training, or emergency response procedures.

10. Frequently Asked Questions About AEDs in Schools

10.1. Does a School With 1,000 Students Need Multiple AEDs?

Not necessarily. A school with 1,000 students on a compact campus may have different AED requirements from another school of the same size with several buildings and facilities spread across a larger area.

10.2. Should an AED Be Kept in the School Medical Room?

It can be a suitable location, but accessibility should be assessed first.

If the medical room is far from busy areas or difficult to access outside regular school hours, other locations may be more practical.

10.3. Can Students Use an AED?

AED use should follow the device's instructions, the school's emergency procedures, and age-appropriate training arrangements.

Schools should prioritise developing a reliable first-response team of trained teachers, staff, and designated personnel.

10.4. Can an AED Replace a School Nurse?

No. An AED is an emergency device designed to assist in responding to cardiac arrest. It does not replace school healthcare personnel or professional emergency medical services.

CPR, AED use, and contacting emergency services should all be coordinated as part of the school's emergency response procedures.

10.5. How Often Should AED Batteries and Electrode Pads Be Replaced?

There is no single replacement interval that applies to every AED.

Schools should follow the manufacturer's recommendations for their specific model and regularly check the expiry dates and condition of both batteries and electrode pads.

10.6. Should Teachers Receive AED Training?

Yes. Teachers and other relevant staff members should be trained in CPR and AED use and informed about AED locations and the school's emergency response procedures.

This helps ensure that the school can respond effectively even when the school nurse or designated medical staff member is not immediately available.

11. Conclusion

Rather than starting by choosing an AED model or deciding how many devices to purchase, schools should first assess their overall emergency response arrangements.

This helps avoid two common problems: having AEDs that do not provide adequate coverage across the campus, or investing in multiple devices without ensuring that staff are trained and the equipment is maintained in a ready-to-use condition.

Installing AEDs is only one part of preparing a school to respond to cardiac arrest.

For these devices to make a meaningful difference in an emergency, the people most likely to reach the casualty first must also have the knowledge and skills to act.

AED training helps participants understand how the device works, recognise signs of cardiac arrest, perform CPR, and use an AED as part of a coordinated emergency response.

Practising realistic scenarios can also help reduce hesitation and build confidence, allowing staff to take appropriate action while waiting for professional medical assistance.

Wellbeing provides integrated AED solutions and practical CPR–AED training, helping schools establish a more proactive and reliable emergency response system.

The approach combines accessible equipment, trained personnel, and regularly reviewed procedures.

Training includes concise theoretical instruction alongside hands-on practice using training manikins and actual AED equipment. Participants learn how to assess a casualty, position AED electrode pads correctly, maintain safety during rhythm analysis and shock delivery, coordinate with other responders, and communicate effectively during an emergency.