First Aid and CPR for Teachers: Classroom Emergencies and Requirements
From a severe allergic reaction to a cardiac arrest on the field, educators are first responders — here’s what to know, and how to be ready.
Teachers are the first responders for a roomful of children, so the priority in any serious classroom emergency is the same: send someone to call 911 and fetch the school’s AED, then act. The emergencies educators most often face are anaphylaxis (give the epinephrine auto-injector first, then call 911), asthma attacks, seizures (protect from injury, never restrain, nothing in the mouth), choking, diabetic lows, concussions, and — rarely — cardiac arrest, where early CPR plus an AED saves lives. There is no single Ontario law requiring every teacher to be CPR-certified, but hands-on first aid training is one of the most practical investments an educator can make.
Few jobs put one adult in charge of so many young people at once. When a child has a severe allergic reaction at lunch, an asthma attack in gym class, a seizure at their desk, or collapses on the sports field, the teacher in the room is the one who has to act — often before the office, the school nurse (if there is one), or paramedics can arrive.
This guide covers the medical emergencies teachers are most likely to face, what Ontario schools are expected to have in place, and why first aid and CPR training is one of the most practical investments an educator can make.
Do Teachers Need to Be CPR Certified?
There is no single province-wide law requiring every Ontario classroom teacher to hold CPR certification. Requirements vary by school board, role, and setting — physical education teachers, early childhood educators, and staff supervising swimming, field trips, or athletics are often required to be certified. Many boards and schools strongly encourage it for all staff.
But the bigger picture is simple: a teacher is responsible for the safety of a roomful of children. Whether or not it is mandated, being able to recognize and respond to an emergency is part of caring for students well. Check your own board’s policies — and consider training regardless.
The Classroom Emergencies Teachers Face Most
Anaphylaxis (severe allergic reactions)
Food allergies are common in schools, and a reaction can turn life-threatening within minutes. Under Sabrina’s Law, Ontario school boards must have anaphylaxis policies, including staff training and individual plans for at-risk students. Teachers should know which students have allergies, recognize the signs (swelling, hives, breathing difficulty, collapse), and be ready to use an epinephrine auto-injector without hesitation. Give the epinephrine first, then call 911; if there is no improvement, a second dose can be given after about 5 minutes. See our anaphylaxis and EpiPen guide.
Source: Canadian Red Cross 2025 & Heart & Stroke (ILCOR 2025) — epinephrine is the first-line treatment; repeat at ~5 minutes if no improvement. Ontario: Sabrina’s Law.
Asthma attacks
Asthma is one of the most common chronic conditions in children. Ryan’s Law allows Ontario students to carry and use their inhalers at school. Teachers should help a struggling student sit upright, stay calm, and use their blue reliever inhaler — and call 911 if it does not help. See our asthma attack first aid guide.
Source: Canadian Red Cross 2025 (assist with the student’s own reliever inhaler; call 911 if no improvement). Ontario: Ryan’s Law.
Seizures
A student may have a seizure at their desk. The right response is to protect them from injury, cushion the head, clear hazards away, never restrain them and never put anything in their mouth, time the seizure, and turn them onto their side (recovery position) once it stops. Call 911 if the seizure lasts longer than 5 minutes, if it is their first, if a second one starts, if it happened in water, or if they do not return to normal afterward. See our seizure first aid guide.
Source: AHA 2024 & Canadian Red Cross 2025 — protect from injury, do not restrain, nothing in the mouth, recovery position after; a seizure >5 minutes (status epilepticus) is a medical emergency.
Diabetic emergencies
A student with diabetes may experience low blood sugar — appearing shaky, confused, sweaty, or unwell. If they are conscious and able to swallow, give 15–20 g of fast-acting sugar (for example 50–100 ml of juice or regular, non-diet soda, or glucose tablets), then recheck in about 15 minutes and repeat if they are still unwell. Never give food or drink to someone who is drowsy or unresponsive — call 911. See our diabetic emergencies guide.
Source: Canadian Red Cross 2025 / Diabetes Canada “Rule of 15” — 15–20 g fast sugar, recheck in ~15 minutes.
Choking
Choking happens at lunch and snack time. For a child (age 1 to puberty) or an adult who cannot cough, speak, or breathe, alternate 5 back blows with 5 abdominal thrusts until the object clears or they become unresponsive. Match the technique to the age: for a baby under 1, never use abdominal thrusts — give 5 back blows and 5 chest thrusts (with the heel of one hand on the lower half of the breastbone) instead. A silent child who cannot breathe needs immediate action.
Source: Canadian Red Cross 2025 & Heart & Stroke (ILCOR 2025) — child/adult: back blows + abdominal thrusts; infant <1 yr: back blows + chest thrusts (never abdominal).
Head injuries and concussions
Falls in the schoolyard and collisions in sports can cause concussions. Under Rowan’s Law, schools have concussion-awareness requirements. The rule is “when in doubt, sit them out” — see our concussion recognition guide.
Source: Ontario Rowan’s Law (concussion awareness); Parachute Canada concussion guidelines.
Cardiac arrest
It is rarer in children, but sudden cardiac arrest can strike a student, staff member, or visitor. Start CPR immediately and send for the AED. For a school-age child, use one or two hands on the centre of the chest (not the infant two-thumb technique), pushing at least one-third the depth of the chest at 100–120 compressions per minute. This is why AEDs in schools matter — combined with early CPR, they dramatically improve survival.
Source: Canadian Red Cross 2025 & Heart & Stroke (ILCOR 2025 BLS) — child compressions: 1–2 hands, at least ⅓ chest depth, 100–120/min.
Know Your School’s AED
Many Ontario schools now have automated external defibrillators, often near the gym or main office. Every teacher should know:
- Where the AED is — and the fastest route to it from your classroom
- How to access it — whether it is in a locked cabinet and how to open it
- How to use it — AEDs guide you with voice prompts, but practising in a course removes hesitation
- Who to send — designate a student or colleague to fetch it while you start CPR
Source: Heart & Stroke Foundation of Canada — early defibrillation with an AED, combined with early CPR, greatly improves survival from sudden cardiac arrest.
See our guides on how to use an AED and AEDs in Ontario schools.
Building an Emergency-Ready Classroom
1Know your students’ medical needs
At the start of the year, learn which students have allergies, asthma, diabetes, epilepsy, or other conditions, and review their individual plans. Know where their medications (auto-injectors, inhalers) are kept.
2Learn your school’s emergency procedures
Know how to call for help, who the trained first aiders are, where the first aid kit and AED are, and the lockdown and evacuation protocols.
3Get hands-on training
Take a first aid and CPR course that covers child and adult skills, choking, anaphylaxis, asthma, seizures, and AED use. Hands-on practice is what lets you act calmly under the pressure of thirty watching students.
4Keep your certification current
Refresh before your certificate expires (typically every three years) so your skills and knowledge stay up to date.
Group Training for School Staff
Many schools arrange group first aid sessions for staff — an efficient way to certify a whole team and ensure consistent emergency readiness across the building. Life Safe offers on-site training that can come to your school. Whether you train individually or as a staff, a Life Safe first aid course equips educators to protect the students in their care.
Frequently Asked Questions
Are teachers required to be CPR certified in Ontario?
There’s no province-wide law requiring every classroom teacher to be certified, though requirements vary by board, role, and setting — phys-ed teachers, early childhood educators, and those supervising certain activities often must be. Regardless, many educators train because they’re the first responder for a roomful of children. Check your board’s policies.
What medical emergencies are most common in schools?
Anaphylaxis, asthma attacks, seizures, diabetic emergencies, choking, fainting, head injuries and concussions, and serious cuts or fractures from falls and sports. Cardiac arrest is rarer but does occur, which is why many schools now have AEDs. Teachers benefit from knowing how to respond to all of these.
Do Ontario schools have AEDs?
Many do, and there’s been a strong push to place them in schools and athletic facilities. Teachers and staff should know where their AED is, how to access it quickly, and how to use it. AEDs are designed for untrained bystanders and give voice prompts, but practising in a course builds confidence.
What does Sabrina’s Law require for schools?
It requires Ontario school boards to have policies protecting students with life-threatening allergies, including exposure-reduction strategies, staff training on anaphylaxis, and individual plans for at-risk students. In practice, teachers should know which students have allergies, recognize anaphylaxis, and be ready to use an epinephrine auto-injector.
Be Ready for Whatever the School Day Brings
Teachers are first responders for the children in their care. Life Safe’s hands-on first aid and CPR courses cover anaphylaxis, asthma, seizures, choking, and AED use — and we can bring training on-site for your whole staff.
Find a class near you: Toronto • Downtown Toronto • East York • Hamilton • Welland • Guelph
Sources & medical review
Written and reviewed by Milos Radojcic (Canadian Red Cross / Heart & Stroke / Lifesaving Society First Aid & CPR Instructor, 10+ yrs; First Aid Instructor Trainer). Clinical content aligned with the Canadian Red Cross (2025), the Heart & Stroke Foundation of Canada, the 2025 ILCOR Basic Life Support consensus, and AHA 2024 first aid guidance for seizures; diabetic guidance follows the Diabetes Canada “Rule of 15.” Ontario legislation referenced: Sabrina’s Law (anaphylaxis), Ryan’s Law (asthma), and Rowan’s Law (concussion). Last reviewed July 2026.