Pupils were greeted by blue flashing lights when they arrived at The Bluecoat School in Stamford.
But this was no emergency, just part of a planned day aimed at enhancing children’s citizenship skills.
Thomas Giddings from North East Ambulance Service along with Dave Inwood and Christina Wright of Northampton Emergency Aid Team told pupils about the different roles of the ambulance service.
Children were taught how to make an emergency call and learned the importance of staying calm.
They also learned that when they make a 999 call the operator will need to know the location, their phone number and exactly what has happened.
Donna Martin said: “It was a fantastic chance for the children not only to understand how to call for assistance but also to realise how dangerous it is to make a hoax call.
“Thanks to Northampton Emergency Aid team, the children enjoyed looking around the ambulance and response car and hopefully gained a better insight into all the sectors of the ambulance service including community First Responders, the air ambulance and hazardous area response team.”