A former Hong Kong teacher has been handed an 18-month prison sentence following his conviction for sexually abusing a student on two separate occasions in 2020. The Tsuen Wan Court ruling comes after Cheng Hon-sze, now 32, was found guilty of two counts of indecent assault, with District Judge Gary Lam Kar-yan refusing to mitigate the penalty despite it being a first criminal conviction. The case underscores the vulnerability of students within institutional settings and the profound psychological consequences that can extend well beyond the abuse itself.
Cheng was convicted of groping the minor and compelling her to engage in obscene acts during separate incidents in May and October 2020, when the victim was 15 years old. The defendant had taught the girl across multiple years of secondary school and held responsibility for the school's marching band, in which she participated as a trumpeter. This dual role as both educator and authority figure within an extracurricular programme would prove instrumental in facilitating the abuse, creating an environment where professional boundaries could be systematically eroded without immediate detection. The judge rejected seven additional counts of indecent assault, determining that the evidence did not meet the threshold for conviction on those charges, though records indicate the defendant had engaged in inappropriate intimate contact with the victim from November 2019 through June 2024—a prolonged period spanning her adolescence into young adulthood.
The sentencing framework demonstrates judicial approach to such cases in Hong Kong. Rather than imposing consecutive sentences that would have resulted in two years imprisonment, Judge Lam ordered partial concurrency, reducing the total term to 18 months. In explaining this decision, the judge specifically highlighted the significant age gap between perpetrator and victim—eleven years—and stressed that the defendant's status as a first-time offender provided no justification for leniency. The severity of the acts committed, their repetition, and their lasting impact on the victim all weighed against mitigation, the judge explained. This approach reflects growing international recognition that institutional abuse by trusted figures warrants substantial custodial sentences regardless of prior criminal history.
Most striking in the judgment was the judge's treatment of psychological evidence documenting the victim's trauma. A clinical psychologist's report presented to the court revealed that the teenager had developed profoundly distorted perceptions of healthy relationships, coming to accept harm inflicted by someone who simultaneously showed her care or kindness. The victim described experiencing a contradictory emotional state persisting for years, during which she failed to recognize appropriate personal boundaries and actively suppressed her own feelings of revulsion toward her abuser. This psychological response is consistent with patterns observed in grooming cases, where perpetrators establish themselves as mentors or supporters before exploiting their position of trust. The victim's developmental stage—adolescence, a critical period for forming healthy relational frameworks—meant that this experience had fundamentally shaped how she perceived safety, trustworthiness, and vulnerability in the world.
Judge Lam quoted from the trauma documentation to highlight how the victim had internalized what the report termed "twisted values," believing that demonstrating affection or providing support somehow nullified the harm caused by abusive behaviour. The report attributed this mindset to the victim's inability to fully comprehend the predatory nature of what was occurring and the inherent power imbalance embedded in a teacher-student dynamic. As an adolescent without fully developed executive function or lived experience against which to benchmark appropriate conduct, the teenager had been uniquely susceptible to manipulation. The judge observed that the victim would require sustained emotional recovery efforts, extending well beyond the criminal proceedings themselves. In remarks directed toward the victim, he expressed hope that she would emerge from this period and encouraged her to pursue professional mental health support as needed.
The defence had argued for a reduced sentence, characterizing Cheng as a relatively young man whose lack of experience in age-appropriate romantic relationships had compromised his judgment. His counsel contended that the defendant deeply regretted the impact his actions had inflicted on his family and urged the court to view the offences as uncharacteristic given Cheng's background and prospects. Supporting letters from his sister and a friend reinforced this portrayal, describing the incidents as out of character and noting that he had subsequently applied for a master's degree at Polytechnic University after being barred from teaching. These mitigation efforts reflect a common defence strategy in such cases, attempting to separate the individual from the act and to emphasize rehabilitation potential. However, the judge remained unmoved by these arguments, apparently viewing them as insufficient to override the institutional breach of trust and the documented psychological harm sustained by the victim.
Psychological assessment of Cheng himself indicated difficulties in forming relationships with peers appropriate to his age and a failure to understand the power dynamics implicit in his position as teacher. The clinical psychologist noted that he had not fully grasped that his behaviour violated social norms and professional ethics, suggesting cognitive or developmental deficits in his understanding of appropriate conduct. Critically, the assessment indicated a low to moderate risk of reoffending, but noted his apparent willingness to engage with professional intervention. Based on this evaluation, Judge Lam mandated that Cheng participate in ongoing rehabilitation work with social workers while serving his sentence, with the Correctional Services Department expected to provide professional psychological support as part of a structured rehabilitation programme. This requirement represents an attempt to address underlying factors contributing to the offence while simultaneously protecting public safety during his incarceration.
The case carries relevance for educators and parents across Southeast Asia, where institutional safeguarding mechanisms often remain underdeveloped. Hong Kong's advanced legal system processed this matter with apparent thoroughness, yet the victim endured abuse across an extended period before formal intervention occurred. The role of an authority figure with legitimate access to the minor, combined with his involvement in extracurricular activities and apparent mentoring capacity, created multiple opportunities for boundary violation. The psychological evidence presented shows how grooming tactics exploit adolescent developmental vulnerabilities, creating confusion between affection and abuse that can persist into adulthood. The judge's emphasis on the victim's long-term emotional recovery underscores that such cases inflict damage extending far beyond the immediate acts themselves, affecting how survivors conceptualize safety, relationships, and their own agency.
