You get:
- reteaching entire units when only one skill is missing
- interventions that don’t address the actual gap
- students stuck on prerequisite skills (can’t move forward)
- no diagnosis before prescription (guessing, not knowing)
- wasted time on what students already know
But diagnostic prescriptive models have structure:
- diagnostic: pinpoint specific gaps (not just “struggling”)
- prerequisite chain: identify what skills are missing
- prescription: targeted intervention for each gap
- acceleration: path back to grade-level content
- progress monitoring: check if intervention worked
Without diagnosis, prescription is guessing.
This prompt identifies specific gaps and prescribes targeted interventions.
Assume the role of a diagnostic prescriptive specialist who identifies learning gaps.
Your task is to pinpoint specific gaps and prescribe targeted interventions.
Generate:
1. STUDENT PERFORMANCE DATA
- Grade level: [X]
- Target skill/standard: [what they should know]
- Assessment evidence: [what they got wrong]
- Prior knowledge: [what they already know]
2. PREREQUISITE SKILL CHAIN
[Target skill]
↑ requires
[Prerequisite skill B]
↑ requires
[Prerequisite skill A]
↑ requires
[Foundational skill]
3. GAP ANALYSIS
| Skill | Status | Evidence | Root Cause |
|-------|--------|----------|------------|
| Foundational skill | [Mastered / Partial / Missing] | [data] | [why] |
| Prerequisite A | [Mastered / Partial / Missing] | [data] | [why] |
| Prerequisite B | [Mastered / Partial / Missing] | [data] | [why] |
| Target skill | [Mastered / Partial / Missing] | [data] | [why] |
4. DIAGNOSIS
- Primary gap: [the missing skill preventing progress]
- Secondary gaps: [related missing skills]
- False mastery: [skills they appear to know but don't]
5. PRESCRIPTION (targeted interventions)
| Gap | Intervention Type | Activity | Duration | Success Criterion |
|-----|------------------|----------|----------|-------------------|
| [skill] | Direct instruction | [specific lesson] | X min | [measure] |
| [skill] | Guided practice | [activity] | X min | [measure] |
| [skill] | Independent practice | [assignment] | X min | [measure] |
6. ACCELERATION PATHWAY
| Phase | Focus | Duration | Bridge to Grade Level |
|-------|-------|----------|----------------------|
| 1 | Foundational skill | X days | [how it connects] |
| 2 | Prerequisite A | X days | [how it connects] |
| 3 | Prerequisite B | X days | [how it connects] |
| 4 | Target skill | X days | Grade-level mastery |
7. PROGRESS MONITORING
| Checkpoint | Skill | Assessment | Success Criterion | Next Step |
|------------|-------|------------|-------------------|-----------|
| 1 | [skill] | [type] | [score] | Advance or re-teach |
| 2 | [skill] | [type] | [score] | Advance or re-teach |
8. COMMON DIAGNOSTIC MISTAKES
| Mistake | Why It Fails | Correct Approach |
|---------|--------------|------------------|
| No prerequisite analysis | Missing root cause | Map prerequisite chain |
| Teaching grade-level content first | Student not ready | Backfill prerequisites |
| One intervention for all gaps | Misses specific needs | Targeted per gap |
| No progress monitoring | Don't know if it worked | Check after intervention |
| Skipping foundational skills | Gaps persist | Address root cause first |
INPUTS:
Grade level:
[PASTE GRADE]
Target skill/standard:
[PASTE SKILL]
Assessment evidence (what they got wrong):
[PASTE ERRORS]
Prior knowledge (what they already know):
[PASTE KNOWLEDGE]
Available intervention time:
[E.G., "30 min/day", "1 hour/week", "pull-out"]
RULES:
- Diagnose before prescribing (find the root cause gap)
- Map prerequisite chain (what must come before what)
- Address foundational skills first (gaps at lower levels block higher skills)
- Target interventions to specific gaps (not generic remediation)
- Include success criteria (know when the gap is closed)
- Monitor progress after intervention (did it work?)
- Bridge back to grade-level content (acceleration, not just remediation)
- Diagnose before prescribing — find the root cause gap, don’t guess.
- Map prerequisite chain — know what must come before what.
- Address foundational skills first — gaps at lower levels block higher skills.
- Target interventions to specific gaps — not generic remediation for everything.
- Include success criteria — know when the gap is actually closed.
- Monitor progress after intervention — did it work? If not, adjust.
- Bridge back to grade-level content — acceleration, not just remediation.
Grade level: “5th grade”
Target skill/standard: “Multiply fractions (5.NF.4)”
Assessment evidence: “Student can multiply 1/2 × 1/3 but gets 2/3 × 3/4 wrong (answers 6/12 but doesn’t simplify; answers 5/7 when problem is 2/3 × 3/4)”
Prior knowledge: “Student understands basic multiplication facts, can identify numerator and denominator”
Available intervention time: “20 minutes daily for 2 weeks”
This framework improves outcomes by forcing:
- prerequisite skill chain mapping (what must come before the target)
- gap analysis per skill (mastered, partial, or missing)
- targeted prescription (specific intervention per gap)
- acceleration pathway (back to grade-level content)
- progress monitoring (checking if intervention worked)
Failure modes this prevents:
- reteaching entire units when only one skill is missing
- interventions that don’t address the actual gap
- students stuck on prerequisite skills (can’t move forward)
- no diagnosis before prescription (guessing, not knowing)
This improves on: Generic remediation. Diagnostic prescriptive models target the specific gap and accelerate learning.
Related to: LA-02 (Scaffolding) for just-in-time support; LA-05 (Intervention Tiers) for intensity matching.
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