Oliver King, 12, collapsed during a sports lesson at King David High School in Liverpool.
He had an unknown but treatable condition called Sudden Arrythmic Death Syndrome (Sads), which kills 12 people each week.
Oliver's family believe having more publicly-accessible defibrillators will help cut the number of people who die from Sads.
For more information visit the Olive King Foundation website here.
More top news
Martin Murray will continue his quest to claim a world title the hard way when he faces Germany's Arthur Abraham in Hannover next month.
Germany's national coach Joachim Low says Jurgen Klopp would be a 'great addition' to Liverpool.
Police are investigating the death of a two-month old baby in Blackpool.