They are 18 years old and have been running their cupcake business for almost three years.
Brisbane twins Samantha and Kaitlin Stanton took the entrepreneurial plunge while in year 11 in December 2013 along with another student friend and started Miss Mixed Cupcakes.
"The business started with Instagram photos being posted of the cupcakes and it has grown from there," says Kaitlin.
With initial funding from their family, they set up the culinary business with a Facebook page and showed their products at the local Sunday markets. Two months later, they set up their website through which they take orders.
Samantha says they have since paid back the funding and the business has grown beyond their expectations.
While they still go to the markets occasionally, most of the orders come through the website. They deliver in the north side of Brisbane and make the cupcakes and cakes themselves. "We make up our own recipes as well ... all the flavours and the decorations," says Samantha.
The Stanton twins are among a number of students at St Paul's School in Brisbane who have become entrepreneurs while still at school.
St Paul's has now tapped that mindset by starting an Entrepreneurs Club.
Australian schools are increasingly moving to introduce specialised entrepreneurship programs.
Like Frankston High School in Victoria, which last July started a composite class of 21 years 9 and 10 students to take them through the fundamental steps of entrepreneurship.
Frankston also students participated in the $20 Boss Program.
Students from every state and territory in Australia can avail of an in-school challenge called the $20 Boss Awards. Contestants are provided with $20 of start-up money to plan, budget and market their own business idea over a month.
The $20 Boss program has been developed by the Foundation for Young Australians in partnership with the National Australia Bank.
"That first cohort that went through that subject actually went on to win the most enterprising school in Victoria in 2015," says Shane Hunt, head of science at Frankston High.
One set of students in that round designed chopping boards from recycled wood.
Hunt says one year 9 student, who started her project in semester 1 this year with a range of T-shirts, has built an online store and runs a parallel social media campaign on Instagram. "She sought permission from beyondblue to use their logo and will contribute 50 per cent of all her profits back to them.
"In developing innergecko, she has developed a range of skills critical for the 21st century such as financial and digital literacy, enterprise skills and understanding of the design process," he says.
Hunt says all the businesses created at Frankston High School had some social aspect where students had to contribute money back to causes that they were passionate about.
Another student has a candle-making business, and sells the products at the local markets. "There are kids that are coming into our classrooms that have existing enterprises but we are not aware of them.
"And it is really how do we capture them and help them grow what they are already doing."
Australian universities are not lagging behind. Research in 2014 by Tim Mazzarol from the University of Western Australia found that about one-third of local universities offer postgraduate courses in entrepreneurship or innovation through master's degrees, graduate diplomas or certificates.
St Paul's School headmaster, Paul Browning, says his school did a fairly large strategic planning process looking at the world of 2028 when their younger students would reach Year 12.
"We found two critical uncertainties," Browning says. "One of them is technology. Technology is reshaping and disrupting life as we know it. It could overpower life, it could enrich life. We don't know.
"The other disruptor is linked to that as well. It's employment, where the employment landscape is changing dramatically as well. Driven mainly by technology where artificial intelligence, robotics, etc, are predicted to replace about 50 per cent of the jobs that we know of today within the next decade.
"So we have started to develop a third pathway for students to explore and engage – we are developing an entrepreneurial pathway."
St Paul's partnered with Brisbane-based River City Labs and developed an entrepreneurial course. The 16-week course, happens after school, and is made up of 15 students, from Years 7 to 12, and two teachers who are also participants.
The course outlines how to put together a lean start-up. It features external coaches from the corporate world with expertise in communication, marketing, finance, pitching skills and so on.
At the end of the course, they pitch their start-up ideas to potential investors.
"The whole idea is to give young people the opportunity to develop entrepreneurial skills from which to start and grow that business while they are at school, so when they finish school they are able to move the business even further," Browning says.
"This is about the possibility of real business ideas. There are a number of students, and there will be in every school, who have their own businesses at the moment.
"Our school captain has a dog shampoo business that he created when he was 14 years old. It's just staggering."
Riley Mitchell has put his business A Boy & His Dog on hold while he completes year 12, he says.
Browning does not think that students becoming entrepreneurs before finishing school would be distracted from studies.
Samantha Stanton says they balanced their studies and business pretty well in grade 11. "But when it came to grade 12, it kind of was a bit of a struggle."
The Stanton girls think that enterprise is the future. "It's the whole entrepreneurial mindset ... how the world is going to change in the next few years," says Kaitlin.
A world in which you have to create your own jobs. "Create your own story," as Kaitlin succinctly puts it.