{
  "articleNumber": "A07",
  "version": "1.0",
  "preparedAt": "2026-10-15",
  "status": "prospective",
  "designSummary": [
    {
      "value": "48",
      "label": "Candidate schools; final size gated"
    },
    {
      "value": "24",
      "label": "Candidate district pairs"
    },
    {
      "value": "576",
      "label": "Planned teachers at candidate size"
    },
    {
      "value": "12 weeks",
      "label": "Candidate follow-up"
    }
  ],
  "plannedSchools": 48,
  "plannedDistricts": 24,
  "plannedTeachersPerSchool": 12,
  "plannedTeachers": 576,
  "durationWeeks": 12,
  "primaryOutcome": "Change in weekday job-related minutes outside an agreed paid timetable; blinded 0–20 quality guardrail separately",
  "actualTrialParticipants": 0,
  "trialResultsReported": false,
  "registrationId": null,
  "ethicsApprovalId": null,
  "designActivation": "Pre-main-enrollment independent pilot and justified quality margin;24–120 pair design must meet lower 95% Monte Carlo bound ≥90% power on both time and quality components or no confirmatory launch. Final design frozen in registration before main recruitment. Gate not executed.",
  "executedAnalyses": [
    "Hashed BLS ATUS 2025 respondent/activity integrity and descriptive feasibility audit",
    "Nine-scenario 10,000-replicate matched-pair planning simulation with Monte Carlo error"
  ],
  "allocation": "One school per district pair, independent concealed randomization after preallocation roster/baseline lock",
  "intervention": "Common AI support plus 60-minute weekly paid protected-time charter removing or consolidating an existing obligation; no compensating throughput quota",
  "comparator": "Same AI access, two-hour orientation, 30-minute weekly clinic; ordinary existing allocation discretion, no withdrawal of existing planning time",
  "measurement": "Two assigned baseline and three assigned endline teaching weekdays, plus blinded parallel quality task forms",
  "safety": "No employee surveillance, no student personal-data uploads, independent adverse-event authority",
  "analysisImplementationLimits": "Source audit and synthetic planning executed. Primary missing-data, final power-gate, allocation and participant analysis implementations must be completed and validated before study activation."
}