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
Rochdale MP Simon Danczuk says his battle to expose abuse left him depressed and helped wreck his marriage.
Police are searching for three men after a victim suffered fractured eye sockets in an attack outside a club in Manchester city centre.
Singer Linda Nolan, who was accused of being a benefits cheat, says she was "scared to death" of appearing in court.