School Lockdown Procedures
A school lockdown is a protective response to a threat, not a plan in itself. Locking external doors may be one part of the response, but effective incident management also depends on timely decisions, clear alerts, trained staff, accessible procedures, reliable communication and a safe route back to normal operation. Schools and colleges face a wide range of possible emergencies. These may include an intruder, a weapon-related incident, dangerous activity close to the site, civil disorder, a hazardous release or another situation in which leaving buildings could expose people to greater danger. No public article can prescribe the correct action for every site or incident. Procedures must be developed through a local risk assessment with advice from the police, local authority, trust, emergency planners and other relevant partners. Sensitive operational details should remain controlled rather than published openly. At SLC Training, we help education settings turn written emergency arrangements into practical, rehearsed roles through lockdown and incident-management training. Please note: This article provides general information, not legal, security or emergency advice for a particular site. Schools must follow the law, national guidance, local authority or trust arrangements, police advice and their own approved emergency plan. Call 999 where there is an immediate threat to life. A lockdown secures all or part of a school or college against a threat. It is one of several protective actions that may be needed during an emergency: The right response depends on the threat and where it is located. Evacuating towards an external danger may increase risk, while remaining in place during a fire may be unsafe. A plan should therefore define how authorised leaders obtain information, select an appropriate response and change that response if circumstances develop. For schools in Wales, the Welsh Government’s emergency planning and response guidance helps education and childcare settings prepare for and respond to emergencies. The accompanying critical incident management plan template provides a useful starting point that each setting should adapt. The Department for Education’s school and college security guidance, which applies to England, similarly recommends realistic, proportionate planning informed by local police and other partners. A downloaded template cannot know how a particular site operates. Schools differ in their buildings, access controls, pupil needs, staffing, transport, community setting and activities outside normal hours. A useful plan should reflect: The final plan should be simple enough to use under pressure while remaining detailed enough to allocate responsibility. Length is not a substitute for clarity. 1. A site-specific security risk assessment Start with credible threats, vulnerabilities and existing controls. Consider both incidents on the site and events nearby that could affect it. The assessment should be proportionate and informed by competent advice, not driven by dramatic but unrealistic scenarios. 2. Clear authority and command roles The plan should state who can initiate a lockdown, who assumes leadership if that person is absent, who contacts emergency services and how decisions transfer if the incident commander becomes unavailable. Deputies matter because emergencies do not follow the staff rota. 3. A distinct and reliable alert Staff and pupils must be able to distinguish lockdown from fire evacuation and other routine signals. The alert should reach classrooms, offices, toilets, outdoor areas and noisy spaces. A backup method is needed if the main system fails. 4. Simple actions linked to the type of alert People should know the immediate actions expected of their role without needing to read a long document. Procedures should address pupils who are in corridors, outside their usual classroom, arriving at the site or temporarily separated from their group. 5. Communication with emergency services The school should know what essential information responders may need and who is responsible for providing it. Staff must understand that instructions from police or emergency services may supersede the internal plan as the incident develops. 6. Accountability without creating extra danger The plan should include a practical way to identify missing, additional or unaccounted-for people. Staff should not expose themselves or pupils to danger simply to complete a register. Information should be relayed through the approved channel. 7. Controlled communication with families and the wider community Parents and carers need to know in advance how the school will communicate during a serious incident and why arriving at the site may obstruct emergency access or increase risk. Messages should be factual, authorised and coordinated with emergency services. 8. Recovery, welfare and learning The plan must cover the end of the lockdown, reunification, medical needs, safeguarding, staff and pupil welfare, business continuity, records, communication and review. The all-clear should come only through a trusted route defined in the procedure. A procedure is not effective if some people cannot perceive the alert, understand the instruction or carry out the expected action. Inclusive planning should consider: Individual support arrangements should be developed with the person and those who know their needs. They should identify the support required without creating unnecessary labels, stigma or disclosure of confidential information. Staff should also plan for distress. Calm, concise communication and predictable roles can help reduce confusion. The principles in SLC’s de-escalation guide can support staff communication, although an active security incident must always be managed through the emergency plan. The exact content will depend on the setting, but leaders should consider whether their plan clearly covers: Detailed site vulnerabilities, access-control information and other sensitive security material should be available only to people who need it. Public-facing information for families can explain the communication and collection arrangements without disclosing operational detail. Staff need more than a copy of the policy at induction. Training should help them understand the reasoning behind the procedure and apply it when the situation is incomplete or unexpected. Useful training may include: Permanent, temporary, supply, catering, cleaning, premises and wraparound-care staff may all be present when an incident occurs. The depth of training can reflect the role, but nobody should be left unaware of the basic alert and immediate action. Exercises should test whether the plan works without causing unnecessary fear. The format may range from a leadership tabletop discussion to a staff communications test or a carefully planned whole-school exercise. Before an exercise, leaders should: Unannounced, highly realistic simulations can create avoidable distress and confusion. The purpose is to build calm competence, not to frighten people into taking the exercise seriously. Each exercise should generate specific learning. If an alert was not heard in one area, a contact list was out of date or a visitor did not know what to do, the owner and deadline for improvement should be recorded and tracked. Communication can protect people or create additional risk. A plan should identify who approves messages, which channels are used and how the school will respond if the normal systems are unavailable. Messages to staff should be brief, accurate and actionable. Messages to families should explain what they need to do, where updates will appear and why they should not call or travel to the school unless instructed. Speculation about the threat or individuals involved should be avoided. Staff and pupils should understand that sharing live locations, images or operational details on social media may compromise safety or spread misinformation. This expectation should be communicated before an incident, with due regard to safeguarding and the school’s lawful policies. After the immediate danger, communication should address reunification, welfare support, expected disruption and sources of verified information. Privacy, ongoing police activity and the needs of those directly affected must shape what can be shared. The end of the protective response is the start of recovery. Depending on the incident, the school may need to: A debrief should not become a search for individual blame. Leaders should examine how the system performed: whether alerts worked, information moved, roles were understood and support needs were met. If physical intervention occurred during the incident, it should be reviewed separately under the relevant safeguarding and recording framework. SLC’s article on physical intervention in schools explains the importance of necessity, proportionality, reporting and post-incident learning. The Terrorism (Protection of Premises) Act 2025, commonly known as Martyn’s Law, became law on 3 April 2025. It establishes requirements for certain premises and events to improve preparedness for terrorist attacks. According to the Department for Education’s current guidance on Martyn’s Law for education settings, early years, primary, secondary and further education premises within scope receive special treatment and remain in the standard tier even if 800 or more people may be present. The standard-tier public protection procedures cover evacuation, invacuation, lockdown and communication. As of August 2026, the Act is not yet in force. The government has stated that there will be an implementation period of at least 24 months from Royal Assent and that statutory guidance will be published during that period. Settings do not need to comply until the law comes into force, although official guidance encourages all education settings to maintain preparedness plans. Schools should monitor authoritative updates rather than rely on sales claims or assume that buying a particular product will create compliance. Organisational preparedness depends on proportionate procedures, competent people and regular review. Using the fire plan with a different alarm Security threats can require the opposite of evacuation. Lockdown, invacuation and evacuation need distinct decision points and clearly understood actions. Relying on one senior leader The headteacher may be off site, isolated or unable to communicate. Authority, deputies and transfer of command should be explicit. Forgetting non-classroom spaces Plans often work well for occupied classrooms but overlook corridors, toilets, dining areas, sports spaces, reception, outdoor areas and people arriving or leaving. Assuming one alert reaches everyone Noise, hearing impairment, separate buildings or system failure may prevent people receiving the message. Test reach and maintain a backup. Publishing sensitive operational detail Families need useful information, but public documents should not expose access controls, vulnerabilities, internal locations or response tactics. Running a drill without welfare planning A technically successful exercise can still harm trust if it causes avoidable distress. Risk assessment, briefing, inclusion and follow-up are part of good exercise design. Failing to close actions after a review A debrief has little value if faults remain on a spreadsheet. Each action needs an owner, deadline and evidence of completion. Does every school need a lockdown procedure? Schools should assess the security and emergency risks relevant to their setting and follow the guidance that applies in their nation. Current Welsh and English guidance supports proportionate emergency planning, and official Martyn’s Law guidance encourages all settings to maintain preparedness plans. What is the difference between lockdown and invacuation? Invacuation moves people to a safer place inside the premises. Lockdown secures the premises, a building or an area against a threat. They may be used together, but they are not identical. Should lockdown drills be unannounced? Not by default. Leaders should select an exercise format through a risk assessment, with regard to age, additional needs, trauma, safeguarding and local advice. People should understand when an activity is an exercise so training does not create unnecessary fear or a mistaken emergency response. Should parents come to school during a lockdown? Parents and carers should follow the school’s verified instructions. Arriving without being asked may expose people to risk, obstruct emergency services or interfere with the response. Schools should explain this expectation before an incident occurs. Does Martyn’s Law already apply to schools? No. The Act became law in April 2025 but is not yet in force as of August 2026. The government intends an implementation period of at least 24 months and will publish statutory guidance. Schools should follow current requirements and monitor official updates. How often should a lockdown plan be reviewed? Follow national, local and organisational review requirements. Also review after an exercise or incident and whenever the site, population, threat picture, technology, staffing or official guidance changes. Effective school lockdown procedures are clear, proportionate, inclusive and practised. They help people recognise the alert, understand their role, communicate reliably and adapt as an incident develops. The goal is not to make a school feel like a fortress. It is to give staff and pupils a calm, credible way to protect life during a rare but serious emergency, while maintaining an environment in which children can learn and feel safe. SLC Training provides tailored lockdown and incident-management training for schools and education settings. Contact SLC Training to discuss a programme built around your site, people and existing procedures.School Lockdown Procedures: A Practical Guide to Incident Management
What is a school lockdown?
Why a generic lockdown template is not enough
Eight foundations of effective school lockdown procedures
Build inclusion into the lockdown plan
What should a school lockdown plan include?
How to train staff for a lockdown
How should schools practise lockdown procedures?
Communication during and after an incident
What should happen after a lockdown?
School lockdowns and Martyn’s Law
Common school lockdown planning mistakes
Frequently asked questions
Conclusion: turn the written plan into a shared capability
