As physical violence, threats and verbal abuse become more common in Canadian schools, school boards face growing pressure to demonstrate that known risks are being properly assessed and addressed. This article examines how duty-of-care obligations extend to both students and employees, where legal and operational exposure can arise, and why policies alone are not enough without practical emergency procedures, staff training, reliable incident reporting and a clear way to summon immediate assistance. It also explains how Sentinel Shield can support a broader school safety strategy without relying on surveillance or personal mobile phones.

Violent incidents in schools do not end when the immediate situation is resolved. They initiate a secondary cost cycle that many district budgets and risk models fail to capture in full.

Post-incident costs commonly include:

• Emergency response and internal investigations

• Workers’ compensation and accommodation claims

• Physiotherapy and physical rehabilitation

• Long-term mental health support

• Substitute staffing during recovery periods

• Legal exposure, grievance handling, and case management