{
  "schemaVersion": 1,
  "updated": "2026-09-28",
  "publisher": "Lazy Eight",
  "measurement": "Illustrative annual education spending in selected alternative-school models, nominal USD",
  "scope": "Global Montessori schools plus U.S. microschools. A partial opportunity proxy spanning early childhood and school-age education, not a measured total for all alternative schools globally.",
  "baseYear": 2026,
  "targetYear": 2030,
  "sourcedMontessoriSchools": 15763,
  "sources": [
    {
      "id": "montessori",
      "label": "2022 Global Montessori Census",
      "url": "https://journals.ku.edu/jmr/article/view/18675",
      "fact": "15,763 Montessori schools worldwide in the 2022 census. Historical count, carried forward unchanged as a modelling anchor."
    },
    {
      "id": "microschools",
      "label": "National Microschooling Center, September 2026",
      "url": "https://microschoolingcenter.org/news-blog/experience",
      "fact": "Estimated 1 to 1.5 million U.S. microschool students. Includes several models, including small private schools, charter arrangements, cooperatives and hybrid settings."
    },
    {
      "id": "tuition",
      "label": "National Microschooling Center, 2025 sector analysis",
      "url": "https://microschoolingcenter.org/news-blog/2025-american-microschools-sector-analysis",
      "fact": "74% of surveyed microschools charge annual tuition and fees at or below $10,000. This is a distribution of schools, not an average spending figure per student."
    },
    {
      "id": "new-schools",
      "label": "National Microschooling Center, 2026 sector analysis",
      "url": "https://microschoolingcenter.org/news-blog/sa2026",
      "fact": "Among operating schools examined, 16% had opened less than one year ago and 17% one to two years ago. Study covered 1,000 operating, prelaunch and closed schools; these age shares are not a national growth rate."
    }
  ],
  "formula": "(15763 * assumed Montessori students per school * assumed annual spend + assumed U.S. microschool students * assumed annual spend) * (1 - assumed overlap deduction) * (1 + assumed annual nominal growth) ** (year - 2026)",
  "scenarios": {
    "low": {
      "assumptions": {
        "montessoriStudentsPerSchool": 75,
        "montessoriAnnualSpendUSD": 3000,
        "usMicroschoolStudents": 1000000,
        "microschoolAnnualSpendUSD": 5000,
        "overlapDeduction": 0.25,
        "annualGrowth": 0.05
      },
      "baseAnnualSpendUSD": 6410006250.0,
      "annualSpendUSD": {
        "2026": 6410006250.0,
        "2027": 6730506562.5,
        "2028": 7067031890.62,
        "2029": 7420383485.16,
        "2030": 7791402659.41
      },
      "annualSpendINRCrore": {
        "2026": 61407.86,
        "2027": 64478.25,
        "2028": 67702.17,
        "2029": 71087.27,
        "2030": 74641.64
      }
    },
    "central": {
      "assumptions": {
        "montessoriStudentsPerSchool": 100,
        "montessoriAnnualSpendUSD": 5000,
        "usMicroschoolStudents": 1250000,
        "microschoolAnnualSpendUSD": 7500,
        "overlapDeduction": 0.2,
        "annualGrowth": 0.08
      },
      "baseAnnualSpendUSD": 13805200000.0,
      "annualSpendUSD": {
        "2026": 13805200000.0,
        "2027": 14909616000.0,
        "2028": 16102385280.0,
        "2029": 17390576102.4,
        "2030": 18781822190.59
      },
      "annualSpendINRCrore": {
        "2026": 132253.82,
        "2027": 142834.12,
        "2028": 154260.85,
        "2029": 166601.72,
        "2030": 179929.86
      }
    },
    "high": {
      "assumptions": {
        "montessoriStudentsPerSchool": 125,
        "montessoriAnnualSpendUSD": 6000,
        "usMicroschoolStudents": 1500000,
        "microschoolAnnualSpendUSD": 10000,
        "overlapDeduction": 0.15,
        "annualGrowth": 0.1
      },
      "baseAnnualSpendUSD": 22798912500.0,
      "annualSpendUSD": {
        "2026": 22798912500.0,
        "2027": 25078803750.0,
        "2028": 27586684125.0,
        "2029": 30345352537.5,
        "2030": 33379887791.25
      },
      "annualSpendINRCrore": {
        "2026": 218413.58,
        "2027": 240254.94,
        "2028": 264280.43,
        "2029": 290708.48,
        "2030": 319779.33
      }
    }
  },
  "limitations": [
    "The Montessori school count is from 2022, not a new 2026 census.",
    "School sizes, annual spending, overlap deductions and growth rates are Lazy Eight assumptions. None is a measured global average or a statistical confidence interval.",
    "Microschool student-count uncertainty is retained through low and high scenarios. Part-time attendance and tuition discounts make spending estimates particularly uncertain.",
    "An across-the-board overlap deduction is a sensitivity assumption; no matched roster establishes the true overlap.",
    "The model omits many alternative models and non-U.S. microschools. It does not separately add Alpha, Acton or Planet School, which could already be included in the underlying categories.",
    "Annual spending is a proxy for sector scale, not audited school revenue, education technology revenue, Planet School revenue, or the brand-services market.",
    "The growth scenarios assume nominal annual increases. They are not observed sector growth or forecasts published by the cited researchers."
  ],
  "displayCurrency": {
    "currency": "INR",
    "unit": "crore",
    "inrPerUSD": 95.8,
    "referenceDate": "2026-09-28",
    "source": "https://wise.com/us/currency-converter/usd-to-inr-rate/history/28-09-2026",
    "note": "Fixed display conversion, not a future FX forecast. 1 crore = 10 million rupees."
  },
  "chartDisplay": {
    "openingHeightFraction": 0.5,
    "scaleMinimumINRCrore": 104550.93844892703,
    "note": "The line chart uses a nonzero vertical scale to make the trend visible. The scale minimum is disclosed in the chart description and linked methodology; underlying scenario values are unchanged."
  }
}