An unremorseful teenage boy who attacked and raped a fellow high school pupil at a house party in the Blue Mountains will be held in youth detention for at least two months.
The boy was initially involved in consensual sexual activity with his victim before pushing further, sexually assaulting her six times over a two-hour period in the living room of a home west of Sydney, a magistrate found in May.
The same magistrate on Thursday sentenced the boy to nine months' detention and set a two-month non-parole period.
"The young person has shown no contrition," the magistrate said.
"(The victim) was required to come to court and relive the offences.
"He, in effect, placed responsibility for the offences on her."
The offender and the victim, who both attended Katoomba High School, cannot be identified for legal reasons.
The attack occurred on a mattress in the home's living room, after the party had quietened down and other attendees had gone home or retired to bedrooms.
The boy's lawyer had suggested it was noteworthy that the girl had her phone next to her during the attack and hadn't called out to others in the home for help.
The magistrate dismissed that.
"There is no right way to deal with the situation and no right way to act and I draw no criticism or draw no conclusions (upon her)," she said.
Strong references of the boy's otherwise good character and strong, supportive family and social ties mitigated the sentence, with the magistrate accepting his prospects of rehabilitation were "strong".
The girl, who had not had sexual intercourse when the attack occurred, has described her attacker as "a monster" who'd left her "ashamed and irreversibly damaged".
She now struggles with nightmares, psychological issues and low self-esteem.
"He violated me and he took away my virginity," she said in a statement read by lawyer Michael Bradley outside court.
"He took away my confidence, my mental health and the healthy life I led before the attack.
The girl's family was now considering suing the NSW education department for alleged failures to address warnings about the boy prior to the attack, Mr Bradley said.
The family also want the department's report into the school's response released publicly.
