A tweet from Daily Telegraph reporter Hannah Furness revealed that while the Duchess was chatting with some of the girls from the school she told them, "My first job when I was 14, I remember taking out the trash, all sorts".
The royal couple are now enjoying their first royal tour overseas together down under, taking in the sights in Australia, Tonga, Fiji and New Zealand.
While Harry and Meghan will postpone their visit to America next year, it is understood Meghan, 37, will continue with her programme of official engagements until the birth of her baby.
A royal aide said: "She's feeling fine, but resting".
"After a busy program, The Duke and Duchess have chose to cut back The Duchess's schedule slightly for the next couple of days, ahead of the final week and a half of the tour", Kensington Palace said in a statement.
The Duchess was back on deck at lunch time, welcomed by Australia's Prime Minister Scott Morrison at an Invictus Games reception for competitors and mental health organization representatives.
Tonight's Invictus Games Opening Ceremony has suffered a momentary setback with organisers postponing the event for just over an hour, after vital technical equipment was damaged when violent storms rolled through Sydney shortly before it was due to start.
She travelled from England to Australia on the night of Princess Eugenie's wedding, and she's pregnant with her first child. Currently, she is busy shooting the schedule of Shonali Bose's The Sky Is Pink. She wants to do everything, but Prince Harry is encouraging her to pace herself.
Following this event, Meghan and Harry will kick off the 2018 Invictus Games, taking a boat to the Jaguar Land Rover Driving Challenge on Cockatoo Island.
Thomas Markle is "filled with love, joy, and happiness" following the news his daughter, Meghan, Duchess of Sussex, is expecting a baby.
The team of 40 Canadian military members and veterans has arrived in Sydney, Australia as the Invictus Games are just days away.
Dylan Alcott, a triple Paralympic gold medallist in wheelchair tennis and wheelchair basketball, said: "We gave him a gift. We said: 'One hundred per cent". And he put them on, over his jeans.