A Hong Kong court on Monday handed down an 18-month prison sentence to a former teacher convicted of sexually abusing a student who was just 15 years old when the assaults occurred in 2020. District Judge Gary Lam Kar-yan made clear at Tsuen Wan Court that the severity of the offence precluded any consideration of leniency, dismissing arguments that this was the defendant's first criminal conviction. The case underscores ongoing concerns about safeguarding failures within educational institutions across the region, where trusted authority figures have exploited their positions with devastating consequences for young people in their care.

Cheng Hon-sze, now 32, was found guilty of two counts of indecent assault for groping the student and compelling her to perform a sexual act in May and October 2020. The judge sentenced him to one year of imprisonment for each count, with the sentences served as partially concurrent rather than fully consecutive, resulting in the 18-month total. Seven additional counts against Cheng were dismissed after the court determined that on those occasions either the victim had not explicitly refused the defendant's advances or the conduct did not meet the threshold for indecent assault. However, these acquittals offer limited solace given the broader pattern of abuse that emerged during proceedings.

Evidence presented to the court revealed that Cheng had engaged in repeated intimate contact with the girl spanning from November 2019 through June 2024, during which time she aged from 14 to 19. The abuse took place within the school environment, including the music storage room, exploiting the access and privacy afforded to a staff member. Cheng had taught the girl across multiple academic levels and served as director of the school's marching band, in which she performed as a trumpeter. This positioning allowed him sustained, unsupervised contact and created an imbalance of power that made resistance difficult for a minor dependent on his instruction and evaluation.

The psychological toll on the victim emerged as perhaps the most haunting aspect of the judgement. A trauma assessment presented to the court described a young person struggling with deeply conflicted emotions toward her abuser, viewing him simultaneously as someone who had provided mentorship and caused profound harm. The report documented how prolonged abuse during a critical developmental period had warped her understanding of acceptable relationships, leading her to develop what the judge termed "twisted values" wherein she accepted mistreatment if accompanied by signs of care or affection. This psychological distortion reflects a recognised pattern in survivor trauma, where victims may struggle to reconcile the positive interactions they experienced with the abuse they suffered.

The emotional damage extended far beyond the immediate assaults. The psychological evaluation noted that the victim had spent years in a contradictory mental state, progressively abandoning personal boundaries and suppressing natural disgust at inappropriate contact. Rather than recognising these warning signs, she had internalised a worldview shaped by her experience—one in which trusted authority figures remained inherently unpredictable and capable of sudden betrayal regardless of their outward demeanour. Judge Lam observed that the girl's road to emotional recovery would be lengthy and uncertain, publicly expressing hope that she would emerge from this trauma and encouraging her to seek professional support.

The defendant's own psychological profile, as documented in a clinical psychologist's report, suggested underlying vulnerabilities in his capacity to form age-appropriate relationships. The assessment indicated that Cheng had failed to genuinely comprehend the power imbalance inherent in his position as teacher, nor had he fully grasped that his behaviour violated fundamental social and professional boundaries. The psychologist estimated Cheng posed a low to moderate risk of reoffending, contingent on his engagement with professional rehabilitation. This assessment informed the judge's decision to require Cheng to participate in ongoing work with social workers as part of his sentence, with the Correctional Services Department tasked with providing appropriate psychological intervention during his incarceration.

Cheng's defence team had mounted arguments centring on his relative youth at the time of the offences and his claimed lack of relationship experience, suggesting these factors had clouded his judgement and allowed inappropriate feelings to develop toward the student. His legal counsel acknowledged that the boundary between teacher and student should never have been breached, yet urged the court to impose a more lenient sentence while highlighting his subsequent applications for further education at Polytechnic University following his disbarment from teaching. Mitigation letters from his sister and a friend characterised the conduct as aberrant and inconsistent with his normal personality, a common element in such defences that courts typically treat with caution.

Judge Lam's refusal to reduce the sentence despite Cheng's first offence status sends a clear message about the seriousness with which Hong Kong courts regard abuse of authority by educators. The combination of the age difference—11 years—the inherent power imbalance, the location of abuse within a school setting, and the repeated nature of the offending all militated toward a custodial sentence that could not be minimised by personal circumstances. The judge's approach reflects an evolving judicial recognition that victims in such cases, particularly minors, deserve protection through proportionate punishment that acknowledges both the specific harms inflicted and the broader institutional failure that allowed the abuse to persist.

The case reverberates beyond Hong Kong's borders with implications for educators and institutions throughout Southeast Asia. It demonstrates how institutional structures can inadvertently facilitate abuse when background checks prove inadequate, supervision remains lax, and student complaint mechanisms fail to function effectively. Schools across the region often struggle with resource constraints and competing priorities that can push student safeguarding to the margins of operational concern. The psychological consequences documented here—the development of unhealthy relationship patterns, the erosion of trust in authority figures, and the long-term trauma extending years after the abuse ended—represent costs that schools and societies ultimately bear when duty of care is breached.

For Malaysian observers, the case carries particular relevance given recurring concerns about safeguarding within educational institutions locally. Incidents of abuse by teachers have periodically surfaced in Malaysian schools, raising questions about screening procedures, mandatory reporting protocols, and the adequacy of support services for affected students. The Hong Kong judgement underscores that protecting minors requires not merely identifying perpetrators after harm has occurred, but establishing robust preventative mechanisms including transparent governance, regular training for staff on appropriate boundaries, and accessible reporting channels that genuinely protect whistleblowers and complainants from retaliation or dismissal. The road to institutional reform remains long, but cases such as Cheng's provide both cautionary examples and benchmarks for the seriousness with which abuse should be treated within educational systems.