Most schools have an active supervision plan for student arrival and dismissal. But what happens when teachers are absent, administrators get pulled away, and the adults assigned to supervise critical areas are suddenly unavailable?
That’s when seemingly solid supervision plans can quietly unravel, creating preventable gaps at some of the busiest and highest-risk times of the school day.
A teacher assigned to bus duty calls off sick. Another is attending an IEP meeting. The principal is tied up with an upset parent. The assistant principal is responding to a student fight. Suddenly, several of the adults responsible for actively supervising students are no longer where they’re supposed to be.

Over more than 40 years of conducting school security assessments, I’ve seen this “perfect storm” unfold. Serious incidents don’t always occur because schools lacked a supervision plan. They often occur because the plan quietly broke down and no one recognized or covered the gaps.
Active supervision is an evidence-based practice that helps schools prevent problems before they escalate. But effective supervision depends on more than assigning adults to duty posts. It also requires anticipating staff absences, unexpected interruptions, competing priorities, and the daily realities of operating a school.

Every school should ask important questions:
- Who covers arrival duty when assigned staff are absent?
- How are supervision changes communicated to staff already on campus?
- Which locations receive priority coverage if staffing becomes limited?
- Do staff know they are expected to speak up when they notice an uncovered supervision area?
The strongest active supervision plans don’t assume everything will go according to schedule. They assume that someday it won’t.
That’s why backup supervision plans should be as intentional as the original assignments.
In my newest webpage, I explore one of the most overlooked vulnerabilities in school safety: what happens when active supervision plans break down and practical strategies school leaders can use to prepare before it happens.
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For additional research and best practices on active supervision, also visit:
Dr. Kenneth S. Trump is President of National School Safety and Security Services
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