Opera in Schools has been performing in the main centres of Auckland, Wellington and Christchurch for the past seven years.
However, the success of the opera school in Wanganui has paved the way for in-schools programme to include the regional city as well, Trott said.
"We are thrilled especially as students from the school are performing."
Opera in Schools spokesman Andrew Gordon said the goal at New Zealand Opera was to ignite a passion that will last a lifetime and foster young talent.
"We involve future audiences by offering live performance and creative workshops. These are opportunities where young people can engage and join in different aspects of opera and the performing arts."
Singing every day is heaven, say four former opera school students.
Manase Latu, Will King, Angus Simmons and Pasquale Orchard say their time at the New Zealand Opera School had been an incredible gift
All four are also hoping to study overseas later this year with 2018 overseas tutor Professor Cesar Ulloa, who is head of voice at the San Francisco Conservatoire.
Trott said students were very comfortable with this master.
"Cesar is kind, sensitive and sympathetic. He is a warm and caring man, his future students can count themselves very lucky.
"We are very fortunate to have Cear return to us."