Phone Ban or Digital Literacy in a Hong Kong Secondary School
A Hong Kong secondary school has 1,050 students. A survey found 62% sleep less than six hours on school nights, and 48% check social media after midnight. In one term, the school recorded 12 cyberbullying incidents, eight involving anonymous accounts. The vice-principal proposes a phone ban from 7:45 a.m. to 4 p.m., with phones locked in pouches. The student council says phones are needed for emergencies and for a learning app used in three subjects. Teachers are split: some report fewer distractions in classes where phones are already collected; others say bans push use underground. Parents are divided; a petition against the ban has 280 signatures, and a petition for it has 190. The school's insurance policy requires a review of 'reasonable supervision' but gives no specific rule. The principal must decide whether to adopt the ban, a digital-literacy programme, or both, within a HK$120,000 budget.
1. What is the strongest evidence in the setup for and against a phone ban? Explain why each piece of evidence is limited.
Read the worked answer
For a ban, the strongest evidence is the dose of exposure and harm: 62% sleep less than six hours, 48% check social media after midnight, and 12 cyberbullying incidents in one term, eight anonymous. These are concrete symptoms of a school climate problem. But the evidence is limited: the survey is self-reported, it does not show that phone use causes poor sleep, and anonymous bullying may originate outside school or on platforms the school cannot control. The 12 incidents are a count, not a rate, and there is no baseline for comparison. Against a ban, the strongest evidence is functional need and resistance: a learning app is used in three subjects, phones are needed for emergencies, and the petitions are split (280 against, 190 for). That split suggests a ban would be contested and hard to enforce. The 'fewer distractions' teacher reports are also not a controlled comparison. A judgement should therefore avoid treating the survey as proof that a ban works.
2. Recommend whether the school should adopt the ban, the digital-literacy programme, or both. Justify with reference to the school's duty of care and students' rights.
Read the worked answer
Recommendation: adopt both, but not a full-day ban. The school has a duty of care to reduce foreseeable harm, and the sleep and cyberbullying figures justify a clear boundary during lessons. A full 7:45 a.m.-4 p.m. lock-up, however, goes beyond what the evidence shows and would restrict students' ability to contact parents and use the learning app. A tiered policy is more proportionate: phones in pouches during lessons and assemblies, accessible at breaks and for emergencies, with a clear exception for the app under teacher direction. The digital-literacy programme should be the main long-term measure: it can address anonymous accounts, privacy, sleep, and bystander behaviour, which a ban cannot. The HK$120,000 budget should fund staff training, a student-led campaign, and a confidential reporting channel. The ban alone may push use underground; the programme alone may be too slow. Combining them links a boundary to learning, which is more defensible than either slogan.
3. Explain one way the school could evaluate the policy after one term without relying only on bullying counts.
Read the worked answer
The school should evaluate with a mixed set of indicators, not just bullying counts. It can repeat the anonymous climate survey after one term, asking about sleep, late-night use, phone-related distractions, and whether students know how to report bullying. It can track: cyberbullying reports (including anonymous ones), the proportion of incidents that occurred on school premises, phone-related incidents in class, and use of the confidential reporting channel. It should also record whether the learning app is still used in the three subjects and whether parents can reach students in an emergency. Student focus groups, including students who opposed the ban, would help explain why numbers moved. A drop in reported bullying could mean less bullying or less reporting, so the school should ask about trust in reporting. The evaluation should be published in summary form to the school community, with a decision on whether to keep, adjust, or drop the policy.