Systems, Policy, and Prevention: Tiers, Discipline, and Safety
Prevention logic
Systems work follows a public health logic: universal/primary prevention for everyone, selective/secondary for at-risk groups, indicated/tertiary for individuals with current need. MTSS and PBIS operationalize this in tiers, expecting roughly 80% of students to succeed at Tier 1, 15% to need Tier 2, and 5% to need Tier 3. Prevention requires data: universal screening, attendance and discipline review, and fidelity checks. Weak Tier 1 predicts a bloated Tier 3, so scenarios showing a school that over-refers usually trace back to core instruction, climate, or behavior expectations.
Policy and discipline
IDEA discipline rules reward precision. Removal for more than 10 cumulative school days in a year triggers a services determination; a change of placement requires a manifestation determination within 10 school days of the decision, answering two questions: was the conduct caused by or substantially related to the disability, or was it the direct result of the district's failure to implement the IEP? Interim alternative educational settings may run up to 45 school days for weapons, drugs, or serious bodily injury. Stay-put applies while due process is pending.
Traps
- Equating Tier 3 with special education eligibility.
- Asking whether the student meant to misbehave during manifestation determination; intent is irrelevant.
- Assuming zero tolerance is compatible with threat assessment, which is individualized and behavior-focused.
- Treating crisis response as improvisation; structured models assign roles and reunification procedures in advance.
Rule of thumb
Before recommending a new program, ask: Is the problem skill, environment, or system? Then decide whether the fix is prevention, intervention, or policy-and whether the current tier is being implemented with fidelity.