It is good news for the Otago union after not having a representative in last year's team which won the world junior championships in Japan.
In 2008, young lock Josh Townsend was picked for the side, which also won the tournament in Wales.
Otago used to be founded on players from all over New Zealand coming to Dunedin for tertiary study but there had been fears that supply was drying up in the era of professional rugby.
But the well still appears to be running with the naming of the national junior side.
Hooker Liam Coltman, lock Tom Franklin, and first five-eighth Hayden Parker have been named in the team to play in the world junior championships in Argentina in June.
The trio had to go through an exhaustive process to make the side.
They were given dedicated training programmes over the summer months, and had to attend two week-long training camps.
The selectors initially picked 90 players but in the end whittled it down to 26 players to make the trek to South America.
Coltman (20) hails from Taranaki, where he attended Francis Douglas Memorial College in New Plymouth.
He is into his third year of studying for a physical education degree, and said he was attracted to Dunedin for the university study.
A couple of his friends were also going to Otago.
He had made the New Zealand Under-17 side but said it was a complete surprise to make the Colts.
Normally a prop, the position he played for club side Alhambra-Union, he was told to start specialising in the hooking role after the first trial last year.
He has been practising his throwing as much as possible.
"I played there a bit at school, and will try to get as much time as I can with my club playing there.
"It is a bit of a different role than a prop, more like a loose forward," Coltman said.
Franklin (19) is in his second year at the University of Otago, studying for a bachelor of commerce degree.
He comes from Opotiki in the Bay of Plenty and attended St Paul's Collegiate in Hamilton.
Franklin, who stands 1.99m tall, and plays for Southern, said he felt the trial had gone well, and he had done "some things well and others not so well."
He said fitness was a big priority, as was getting a bit heavier.
He had made a Northern Region schools side in 2008, and a few Waikato age group sides, before moving south for university study last year.
Parker made it into the side after playing less than five years in the backline.
From Kurow, Parker (19) played flanker until he was 15 when he decided his future was in the backs, as he was getting too small for the forwards.
A boarder at Otago Boys' High School, he played just one full year in the First XV, but has grown to show his skills in the No 10 position.
Parker, who plays for Taieri, said he was thrilled to get promotion to the national ranks, having only played for Otago representative sides.
He works at the White Robe Lodge at Wingatui, helping out around the stables.
The trio will attend training camp in Auckland at the end of the month before flying to Argentina.
The side's first game is against Fiji on June 5, with other pool matches against Samoa and Wales.
