In the early 1980s at Perth’s Eastern Hills Senior High School, there was no way teacher Chris Fleming could have known that one of his Economics students, Craig Challen, would go on to be at the centre of “one of the most perilous and extraordinary rescues in modern times” - the recovery of 12 boys and their soccer coach fromdeep inside a flooded cave in Thailand.

In this episode, Craig returns to Eastern Hills Senior High after more than 40 years to thank Chris for being the best teacher he ever had.

We also meet a host of former students who Chris Fleming inspired to take up a career in teaching themselves.