Hillmorton High School has closed its doors for at least two days after rodents caused a major technology outage, forcing hundreds of students into remote learning.
The school announced the unexpected closure on Monday, informing the community that a core fibre-optic cable had been severely damaged by pests over the weekend. The damage crippled the school's entire network, taking down internet, phones, and crucial safety and management systems.
In a newsletter sent to parents and caregivers on Monday, principal Sam Ainsworth detailed the extent of the unusual incident.
Critical systems crippled by pests
The damage resulted in a campus-wide blackout of essential services. According to the school, wired and wireless internet connections are down, the student management system is offline, and the phone system is inoperable. Furthermore, other “critical infrastructure” such as the CCTV network was also knocked out by the damaged cable.
Modern schools are heavily reliant on such interconnected systems to function safely and efficiently. The student management system, for instance, holds vital information for daily operations, including student attendance records, emergency contact details, and medical alerts. Its failure raises serious health and safety concerns, as staff would be unable to quickly access information in an emergency or even account for all students on site.
The loss of an internal and external phone system further complicates communication, while a non-functioning CCTV network compromises campus security. Faced with these simultaneous system failures, the school leadership made the call to close the physical campus.
Students switch to remote learning
While the campus is closed, learning is set to continue online. The school has pivoted to a remote learning model, a system many schools have become adept at deploying since the public health restrictions of recent years.

Mr Ainsworth said that staff would be available during regular lesson times and would deliver lessons remotely.
“Work will be set via email or another online method like Google Classroom or Hāpara, for example,” he stated in the newsletter. He also reassured students that any assessments scheduled during the closure would be postponed. “I imagine there may have been assessments due to take place tomorrow, and these will be rescheduled accordingly.”
The rapid transition highlights the increased digital fluency of the education sector, where platforms like Google Classroom have become standard tools for lesson delivery and communication, enabling continuity of learning even when physical attendance is impossible.
Repairs underway with hopes to reopen Wednesday
Technicians are working to resolve the issue, with a cabling company scheduled to spend Tuesday running a new cable to bypass the damaged section.
The school leadership is optimistic that the situation will be resolved promptly, allowing students to return to face-to-face classes on Wednesday morning.
“The cabling company will spend all day tomorrow running a new cable,” Mr Ainsworth said. “We are confident that even if the network is not fully up and running, we will have had time to make provisions to ensure students can return to school.”
The Ministry of Education has been informed of the incident. Southern regional infrastructure manager Simon Cruickshank confirmed the ministry was in contact with the school about the disruption. “The school has already engaged with their IT provider and the cabling company who we understand has repairs underway,” Mr Cruickshank said.
This incident, while unusual, underscores the vulnerability of critical infrastructure to physical threats, including common urban pests. Rodents are a persistent issue in cities, often gnawing on wires and cables not for sustenance, but to manage their ever-growing incisors. In a similar vein, Los Angeles declared a state of emergency amid a warehouse fire, highlighting ongoing infrastructure vulnerabilities. Information on managing pests can be found on the Christchurch City Council website, which provides guidance for residents and property owners.
The closure at Hillmorton serves as a stark reminder of how dependent modern institutions are on complex digital networks, and how easily a single physical point of failure, in this case a cable chewed by a rat, can bring operations to a standstill. It also highlights the ongoing challenges for schools in maintaining ageing infrastructure, an issue that has affected other Christchurch schools, such as the former Redcliffs School impacted by earthquake risks.
The school has stated it will provide further updates to the community as repair work progresses and is confident it will be able to ensure a safe environment for students' return on Wednesday.




