Mrs Hall said she is still, after many years, floored by the number of keen would-be business people signing up.
"Wairarapa is particularly entrepreneurial," Mrs Hall said. "We're a small region, and we've been getting the same numbers for the courses as in Wellington and Christchurch.
"We don't have the big businesses here, so employment opportunities are limited.
"But my students are patient, passionate and persistent people who are willing to make their own solutions."
Mrs Hall, a former IT educator, went into business with her husband Phil in 1985, setting up a silviculture company, Tree Ventures. That spurned another venture -- starting with Mr Hall putting sheets of mesh over workers' goggles, after they had complained of their goggles fogging.
The couple developed a range of similar mesh goggles, which their secondary business, Safe-Eyes, supplies to various industries.
In 2008, Mrs Hall attended a CSBM course at Te Wananga in Palmerston North.
"It was so straight forward -- everything that had taken me 15 years to learn was beautifully wrapped up in one course.
"I thought, 'this would be wonderful for Wairarapa'."
The Halls eventually sold Tree Ventures and started up a training company, which picked up contracts from Te Wananga -- and Mrs Hall has been in front of the classroom ever since. Particularly well received, she said, has been the CMM, which teaches basic skills to improve financial acumen -- setting up savings accounts, curbing luxuries to save money, avoiding debt and managing KiwiSaver funds.
For example, she said, 54 per cent of New Zealanders have their funds in KiwiSaver accounts which yield less interest.
"A lot of it is just basic common sense, but it's not being taught in schools.
"We get a few young people -- and that's important because savings and compound interest can turn into huge money later on."
The business management course is for people with existing businesses or with an idea for an enterprise.
Skills introduced include strategic planning, account management, business law, marketing and intellectual property.
One of Mrs Hall's favourite parts is learning about her students' innovative plans.
"It's pretty buzzy; I don't know where they get their ideas.
"I learn from them as well -- I'll do a class and think, 'I should update my website'".
The advice she is most keen to impart is to prepare to adapt -- "businesses close when people don't take opportunities to grow and change".