"I'm stoked to be asked for a second time."
He said the wonderful thing about this school was getting to work with, not only best of New Zealand, but two international tutors who were at the top of the game internationally.
"It's a really great opportunity work with people from all over the world."
Mr Cudd said he went to the 2016 camp.
"I actually had the most incredible time last summer. It's a really full-on two weeks."
He said he came away having learned an awful lot, with the days going from 7am to 10pm.
"I felt like there was more I could achieve and get from the school so decided to go back again."
Mr Cudd lives in Wellington but his family is still in Rotorua.
He started singing at John Paul College with Claire Mason as his teacher after he auditioned for Les Miserables and got in.
He said he fell in love with the singing and classical training and decided he wanted to study it at university.
The two main aspects he enjoyed about performing was getting to meet and work with amazing people, and the spark and thrill of performing, as well as the interaction with the audience.
After finishing at the school on January 22, he will go to Auckland on January 24 to work with the New Zealand Opera again in The Mikado which will take him through to March.
Mr Cudd will then prepare to audition overseas.
New Zealand Opera School director Jonathan Alver said they had been spoilt for choice.
"So many applicants said they were motivated because we have attracted two of the best singing teachers in the world to form our International Vocal Faculty, sponsored by the Kiri Te Kanawa Foundation.
"Now we can place a dream cast of young New Zealand singers in front of these stellar teachers and their international career prospects will be boosted! It's very exciting."
Usually, 22 students from around the country are selected on merit to attend the residential school.
Mr Alver said after reviewing applications and auditions it was impossible to exclude the two additional applicants who took the number to a record 24.
The Kiri Te Kanawa Foundation International Vocal Faculty will be led by opera star Della Jones and Professor Cesar Ulloa.
Professor Ulloa is chair of voice at the San Francisco Conservatoire and leads programmes for the San Francisco Opera Centre.
Ms Jones is one of the world's leading mezzo-sopranos, appearing in the United States, Russia, Japan, Canada, United Kingdom and throughout Europe in more than 120 operatic roles.
