They may look small but the message to these young first aiders is that their help can make a big difference when things go wrong.
Yesterday marked the 100,000th student for this year participating in the St John Ambulance First Aid Focus program, which aims to teach children from kindergarten to Year 12 about the simple steps they can take to save a life.
Knowing what is a genuine emergency and remembering to call triple-0 were top of yesterday's lesson for Wembley Primary School kindergarten students Tully Martin, Jack Doyle and Felicity Finch.
Since its inception in 2009, almost 400,000 students have been trained by St John through First Aid Focus.
St John first aid training general manager Jane Mahon said making first aid training a part of everyone's life was a priority for St John.
She said the three age-related courses introduced basic first aid skills that were appropriate to the age group.
"With the younger age groups, we explain what an emergency is - it's something that Mum or Dad can't treat - so they understand that you don't call triple-0 if you scrape your knee - and what to do in an emergency," she said.
"By the time they reach high school, we're teaching students basic CPR skills and introducing them to our click2save online course, which we're encouraging all Year 12 students to do before they head to their leavers' celebrations this year. It could be the difference between losing a friend or saving their life."