"We still have a lot of interest from overseas, and we have a still have a dairy skills labour shortage right throughout Canterbury and Otago,'' he said.
A conservative estimate of the money the students would bring in was $500,000 per year, he said.
Initially, Oamaru's school would only cater for international students, as the NTA had to apply for different funding to train domestic students.
Oamaru became an option for an extension of the programme when Musson was visiting the town for the New Zealand Airline Academy and a representative from the Waitaki District Council suggested the possibility.
It made sense because of the proximity of dairy farms in the area and the existing school, he said.
NTA was looking at possible options for housing and transporting the students from Oamaru.
There could be up to 80 students - including Airline Academy students - travelling to and from the airport on a daily basis.
"We are 95 per cent sure it will go ahead, we are just working the council over some consent issues.
"At this stage we are moving ahead with the proposal and what else we need to do.''
To start, there will be three to four courses run per year, with a maximum class size of 11 students.
There was scope to expand the course if there was sufficient demand, Musson said.
Most of the students were expected to come from South America, the Philippines and Japan, he said.
Many would have some previous agricultural experience.
"What we are looking to do is put it into a New Zealand context and health and safety rules - by the time they finish the 12 week project they will be ready to start on a farm under supervision.
"We work in with farmers and pitch in and give them a hand when they need it - it is a win-win.
"They get to see our students, and if they are looking for new staff, they have people on hand to interview.''
The land training school in Christchurch started in 2000 with 10 students and had grown to 250.
Initially, there would be 1.5 equivalent staff employed in Oamaru.
There had been a meeting with one of the neighbouring dairy farms and Musson said he would be contacting other farmers in the coming months.
Waitaki MP Jacqui Dean welcomed the announcement.
"Waitaki farmers have regularly spoken to me about the difficulties they face trying to obtain staff in the region,'' Dean said.
"I have no doubt that such a school will be embraced by local farmers and businesses who will benefit from having skilled staff available.''