Their two-minute hip-hop routine - which they will use for both competitions, was jointly choreographed by the students and Ms Hiroti.
She said Aotea Empire had done extremely well, considering no hip-hop dance classes were available in Whanganui.
"For that reason, I think what they've achieved so far has been incredible. They're improving all the time."
The students range from Year 9 to Year 12, meaning the older dancers will be able to mentor new ones as they join the crew in years to come.
Whanganui City College deputy principal Val Rooderkerk said although the school didn't offer dance as a formal subject, the students were able to gain dance credits for their involvement in Aotea Empire.
"And because they've been doing so well, they'll get very good credits," Ms Rooderkerk said.
She said several of the crew were interested in studying dance at a tertiary level after they leave school.