There were cheers at the Proact this lunch time as the world record for the largest first aid lesson was broken - with 1,795 people on the pitch learning essential lifesaving skills.
The attempt - which came through the hard work of the Community Save a Life Scheme, Bolsover District Council and the British Heart Foundation - needed to beat the previous record of 1,700 people, and was able to stretch the mark by nearly a hundred people.
The participants watched videos demonstarting key lifesaving skills as well as carrying out their newly-learned first aid methods on the pitch to hone them.
For Cheryle Berry, one of the organisers, it was hard to put the achievement into words: "This is a dream come true for all of us, I'm particularly proud of all the children today. It was like waiting for your exam results all over again, my knees were trembling as we waited for the numbers to be announced.
"As soon as the numbers were said there was huge euphoria and pride, because this will mean a lot and we wanted to give the stadium here a lovely birthday present for the 150th year.
"We also wanted to give Chesterfield a boost because it's a town that deserves to be put on the map, we feel that in our little way we've done that."
The attempt was overseen and verified by Glenn Pollard, an official Guinness World Record adjudicator, and he gave his observations after the save a life success.
He said: "Before I came here today I had been working with the organisation team leading up to the event and explaining what I will be looking for, and right from the very start I got a real sense of the organisation that had gone into it.
"That was backed up by my arrival here, I've been overwhelmed by the organisation and the hard work.
"This is about a Guinness World Record title, but it's also about training people in first aid. If one person today is able to save a life on the street then it's been worth it, the certificate is the icing on the cake for what they've achieved."