CPR has been used since 1740 but most people today do not know how to perform it. The document argues that CPR should be a graduation requirement because learning the life-saving technique takes little time and effort but could help save a life. It notes that bystander CPR can triple a cardiac arrest victim's chance of survival. The "Good Samaritan" laws in all 50 states protect those who perform CPR from liability, showing students would be covered if they helped someone in need.