The offending occurred from 2017 to 2020, when he was aged 14 to 17.
Three of the victims - who attended his school at the time of the offending - successfully applied to have their name suppression lifted in order to speak publicly about what happened to them and protect other women.
They are Rosie Veldkamp, Mia Edmonds and Ellie Oram.
The Herald also applied to report the name of school he was attending at the time, but the school's lawyer successfully argued for permanent name suppression for the school.
The Herald has requested comment from the school's principal.
In her victim impact statement Mia Edmonds - who was attacked when both she and the offender were 14 - said she could not explain with words the physical and psychological torture she had been put through.
"His actions that night unleashed a…poison on me that crept into every aspect of my life," she said.
"I felt completely powerless. Despite doing everything young women are told to do - not wearing revealing clothes, asking for help, fighting back - he still got his way. I truly feared for my life that night and that terror never left me."
After he violated her she felt "disgusting" and wanted to shed her skin, she said. "I was completely alone at 14 years old, attempting to process trauma even adults struggle to process."
His sentence was reduced due to his guilty plea, mental health issues, his youth and a recent diagnosis of high-function autism.
Crown prosecutor Pip McNabb wanted a sentence of imprisonment, pointing to the repeated nature of offending and stating she believed he had shown no remorse.
But his defence lawyer sought a non-custodial sentence.
The judge started with a prison sentence of 7.5 years but gave the man discounts for his guilty pleas as well as his youth, his mental health issues, his autism and the rehabilitation he had undergone.
In total, he had a 73 per cent discount, leaving him with 24 months' imprisonment. But expert advice was that sending him to prison would see him learning from more experienced sexual offenders, she said.
"I don't want to see you back here as an older offender much more skilled in …committing sexual violence."
She imposed a sentence of 12 months' home detention and 12 months' supervision and reminded him if he breached the conditions of his sentence he would be jailed.
And she told him he had been given "a lucky break".
"What you did to these young women was appalling…you've got the rest of your life to make up for what you've done. This is a chance for long-term rehabilitation."
Sexual harm - Where to get help If it's an emergency and you feel that you or someone else is at risk, call 111. If you've ever experienced sexual assault or abuse and need to talk to someone, contact Safe to Talk confidentially, any time 24/7: • Call 0800 044 334 • Text 4334 • Email support@safetotalk.nz • For more info or to web chat visit safetotalk.nz Alternatively contact your local police station - click here for a list. If you have been sexually assaulted, remember it's not your fault.
Mental health - Where to get help • Lifeline: 0800 543 354 (available 24/7) • Suicide Crisis Helpline: 0508 828 865 (0508 TAUTOKO) (available 24/7) • Youthline: 0800 376 633 or text 234 (available 24/7) • Kidsline: 0800 543 754 (available 24/7) • Whatsup: 0800 942 8787 (12pm to 11pm) • Depression helpline: 0800 111 757 or text 4202 (available 24/7) • Anxiety helpline: 0800 269 4389 (0800 ANXIETY) (available 24/7) • Rainbow Youth: (09) 376 4155 If it is an emergency and you feel like you or someone else is at risk, call 111.
