Public Reference

Industry Primers

Bottom-up NAICS industry primers written for both public-market and private investors. Leaf industries are researched from the ground up; every group, subsector, and sector above them reads as a contrast across the industries beneath it.

2122 industries · 24 sectors · NAICS 2022

Researched with AI assistance from official U.S. statistics and independent sources, with citations on every page. Figures are not individually verified against pinned evidence — primers marked Evidence-verified are. Industry research, not investment advice. Methodology.

SectorNAICS 61Educational Services

Educational Services (U.S.) — NAICS 61 (sector)

A Histometrics rollup primer for public-market and private investors. Under the North American Industry Classification System (NAICS, the U.S. government's standard scheme for coding businesses by activity), 2022 code 61 is the two-digit sector for Educational Services. It contains exactly one child — the three-digit subsector 611, also called Educational Services — so this sector is, in practice, identical to that single child. This is a short pass-through page: it states this level's own ground-truth federal figures and points you to the 611 primer for the full analysis.

1. Overview

NAICS 61 is one of the largest activities in the U.S. economy by headcount and one of the least "investable" in the ordinary sense. It runs from kindergarten through the research university, and out sideways into flight academies, corporate leadership seminars, swim schools, SAT (Scholastic Assessment Test) tutors, and the firms that sell tests and software to all of them.

Because the sector has only one child, everything true of subsector 611 is true of sector 61 — the numbers below are the same numbers. The distinctive facts to carry into the detail page: the mass of this sector is public and nonprofit and cannot be bought as a stock (tax-funded school districts, state universities, and community colleges employ most of its people), while the investable money sits in a thin, fast-moving commercial fringe — for-profit school operators, trade schools, corporate-training firms, tutoring and enrichment franchises, and the testing-and-software "picks and shovels," most of it privately held.

2. What's inside — and why the sector equals its one child

NAICS nests from broad to narrow: sector (2-digit, this page) → subsector (3-digit) → industry group (4-digit) → industry (5-digit) → national industry (6-digit). Sector 61 has a single-child structure: 61 = 611. There is no second subsector to roll up, so the sector total and the 611 total are the same value at every metric, and no aggregation choices or reconciliation are involved.[3]

The real internal structure — the part worth reading — appears one level down, where 611 fans out into seven industry groups (6111–6117). Those seven split cleanly into two economies that barely overlap: three degree-granting children (colleges/universities 6113, K–12 [kindergarten–grade 12] elementary/secondary 6111, and junior/community colleges 6112) that hold ~78% of the workforce and are overwhelmingly public; and four non-degree children (other instruction 6116, educational support services 6117, business/computer/management training 6114, and technical/trade schools 6115) that hold essentially 100% of measured commercial receipts and are overwhelmingly private. That seven-way split is the whole story of this sector, and the 611 primer tells it in full. Note that child day care sits outside here — it is NAICS 624410, not education.[3]

3. How big it is (this level's rollup figures)

Our ground-truth federal figures for the whole sector, NAICS 61 — identical to 611 because the sector has one child:[1][2]

Metric Value Source (year)
Establishments 118,004 County Business Patterns (CBP), 2023
Paid employees 3,926,820 CBP, 2023
Annual payroll ~$197.66 billion ($197,656,313 thousand) CBP, 2023
First-quarter payroll ~$47.52 billion ($47,515,341 thousand) CBP, 2023
Firms 82,897 Economic Census (EC), 2022
Receipts (revenue) ~$89.55 billion ($89,551,664 thousand) EC, 2022
Four-firm concentration (CR4) 5.0% EC, 2022
CR8 / CR20 / CR50 7.4% / 11.9% / 18.5% EC, 2022
Herfindahl-Hirschman Index (HHI) 11 (near-floor) EC, 2022

(CR4/CR8/etc. are the combined revenue share of the largest 4, 8, … firms; the HHI is a 0–10,000 concentration score where below 1,500 is "unconcentrated." Employment, payroll, and establishments are 2023 CBP; receipts, firms, and concentration are the 2022 EC — two different surveys and years. Do not blend them into a single-year margin, growth rate, or productivity figure.)

The undercount here is severe, and it changes how you should read every figure. Two caveats carry over from the detail page and matter at the sector level:

  • Government is largely excluded. CBP and the EC omit government establishments, so the roughly 7.3 million people working in tax-funded public K–12 districts, and the faculty and staff of public universities and community colleges, sit outside these counts. The true U.S. education workforce — counting public employment — is several times the 3.93 million shown here and is majority-public.[4]
  • Receipts measure only the commercial slice. The three degree-granting children register close to zero receipts in the EC frame (public schools are government, excluded outright; nonprofit tuition and appropriations largely fall outside the receipts frame), so the ~$89.55 billion is the size of the for-hire commercial education market, not of American education. That is also why annual payroll (~$197.66B) exceeds measured receipts — the two measures cover different populations, and you cannot compute a payroll-to-revenue ratio from them. Whole-economy education spending runs to many hundreds of billions of dollars per year that this figure never captures.[4]

Our ground-truth file provides no sector-wide profit margin, growth rate, or nonemployer total, so none is stated.

4. Investable universe (where value concentrates)

For a sector this large, the listed opportunity is startlingly thin, and it clusters child-by-child within 611. There is no way to buy a public university, a public school district, a community college, or a marquee nonprofit (Harvard, the College Board, and ETS [Educational Testing Service] have no stock). The pure-plays are all small-cap for-profits, concentrated in K–12 (Stride, 6111), for-profit higher education and trade schools (6113/6115), and corporate training and consumer instruction (6114/6116); the largest and most stable exposure is not equity at all but municipal bonds (school-district and university debt) and private-market platforms (private equity [PE] roll-ups in school software, testing, premium/international schools, and youth-sports/enrichment franchises). There is no dedicated education ETF (exchange-traded fund) that maps to this sector. The full company tables, tickers, and multiples live in the 611 primer and its seven child primers.

5. How the money works

Beneath one common trait — this is a people business (payroll of ~$197.66 billion is the dominant cost line, and blended pay is only ~$50,000 per worker) — the sector runs on three distinct economic engines, and an investor's rights differ completely by which one a given school sits in:[1]

  1. Publicly funded service (not a profit center). Public K–12 districts, state universities, and community colleges run on appropriations, property taxes, and pass-through federal aid; an investor's only exposure is credit quality on their bonds.
  2. Federal-aid-funded tuition (Title IV). For-profit and many private colleges and trade schools earn net tuition per enrolled student, much of it paid by federal Pell grants and loans under Title IV of the Higher Education Act — capped by the 90/10 rule and gated by accreditation and earnings-outcome tests.
  3. Private-pay / employer-pay services. Corporate training, consumer instruction, and support services are paid directly by employers, households, or institutions; these asset-light fee-, subscription-, and franchise-royalty businesses hold the sector's most attractive, highest-multiple economics.

The 611 primer works these three engines through all seven children in detail.

6. Demand drivers

The children run on different clocks, but a few forces move the whole sector. Demographics dominate: declining U.S. births feed a K–12 enrollment slide, then a projected ~13% fall in high-school graduates by 2041 hits colleges (the "enrollment cliff") — the single biggest shared headwind.[4] Working the other way are skills obsolescence and AI-driven (artificial-intelligence-driven) reskilling (a tailwind for corporate/IT training and trade schools), the wage premium on degrees, compulsory-schooling and credential mandates (a durable demand floor), and policy levers that redirect public dollars to private providers — school-choice vouchers, education savings accounts (ESAs), and Workforce Pell (effective July 2026). Fading the other direction is the roughly $190 billion ESSER (Elementary and Secondary School Emergency Relief) pandemic-aid cliff. AI is double-edged everywhere — more to teach and higher productivity, but cheaper self-teaching that commoditizes homework help and beginner instruction.[4]

7. Regulation

Education is heavily regulated, but the regime differs sharply by child, so a single headline rarely hits all seven the same way. Public K–12 and higher education are governed mostly at the state level (charter authorization, curriculum, teacher licensing, school finance), atop modest federal frameworks; the federal role is in flux, with a 2025 executive order directing the dismantling of the U.S. Department of Education amid ongoing litigation.[4] Federal student aid (Title IV) is the master switch for the aid-dependent commercial children — accreditation, the 90/10 rule, and earnings-accountability tests — where losing eligibility is an extinction-level event. Sector-specific regulators govern the niches (the Federal Aviation Administration over flight schools, state agencies over driving schools, visa policy over language schools), while private-pay training is lightly regulated. The 611 primer maps the full regime.

8. Consolidation

As a whole, this sector is one of the least concentrated the government measures — CR4 of just 5.0%, CR50 of 18.5%, and an HHI near the floor at 11.[2] That reflects both the fragmented private-pay children and the fact that even the giant public institutions are locally organized — thousands of school districts and hundreds of colleges, none large as a firm. But concentration hides in pockets that private equity is actively building: district and K–12 software, an effective admissions-testing duopoly, premium/international K–12 chains, youth-sports and enrichment franchises, and trade-school roll-ups. The public institutions, by contrast, consolidate through mergers and closures, not buyouts — roughly 312 degree-granting colleges closed between 2008 and 2024.[4] Details are in the 611 primer.

9. Risks

The dominant shared risks carry straight over from 611: the demographic cliff (a shrinking pool of school-age children and, from ~2025, high-school graduates); public-funding cliffs and cyclicality (ESSER expiry, budget stress, pension/OPEB [other post-employment benefits] overhang); federal-aid and policy volatility (Title IV rules and Department of Education restructuring, existential for the aid-dependent children); AI disintermediation (free AI commoditizing tutoring, beginner language, and IT training — Chegg's revenue down ~24–39% year over year is the live warning); labor intensity and shortages (payroll is 70–80% of school budgets); structural un-investability and data opacity (most of the sector cannot be owned as equity and is undercounted in business-census data); roll-up execution and leverage risk; and child-safety, data-privacy, and litigation risk wherever minors and student data are involved.[4][5]

10. How to invest & outlook

How to invest — match the route to the economic engine (Section 5), not the "education" label. Public equity is a thin, mostly small-cap set of for-profit operators and ed-tech proxies that together are a rounding error against the sector's true scale — judge them on enrollment/starts, persistence, completion, program-level earnings outcomes, federal-aid exposure, cash generation, and leverage, not revenue growth alone. Fixed income is the deepest, most stable channel — municipal bonds (school-district general-obligation and university/community-college revenue bonds) are how income investors "own" the majority-public core. Private markets hold the scaled economics — PE roll-ups and platforms, private credit, education real estate, and franchising. Across every route, diligence the legal entity and the economic engine first: a public school, a nonprofit charter, a Title IV for-profit, a private-pay franchise, and a building owner may share one campus yet carry entirely different rights and cash flows.

Outlook. NAICS 61 is a huge, defensive, majority-public sector whose mass cannot be bought, wrapped around a growing, investable commercial fringe. The durable opportunities are narrow in public equity and deeper in the credit, real estate, software, and services that surround the institutions. The investable edge concentrates where public dollars are redirected to private providers (school choice, ESAs, Workforce Pell) and where labor-bound instruction is converted into recurring, software-enabled, franchised revenue. Both run against a genuine demographic headwind and an unresolved AI question. Our federal file supports no growth forecast, so none is invented; size the theme to the multi-hundred-billion-dollar whole-economy education spend, not to the $89.55 billion of commercial receipts the code labels 61.

Because sector 61 equals subsector 611, the full analysis lives there. For the seven-child breakdown, operator tables and tickers, unit economics, the complete regulatory map, and detailed sources, see the NAICS 611 primer and, beneath it, the seven child primers: 6111 (Elementary & Secondary Schools), 6112 (Junior Colleges), 6113 (Colleges, Universities & Professional Schools), 6114 (Business, Computer & Management Training), 6115 (Technical & Trade Schools), 6116 (Other Schools & Instruction), and 6117 (Educational Support Services).


Sources

This pass-through page synthesizes the NAICS 611 primer and our ground-truth federal statistics for sector 61 (which, as a single-child sector, equal the 611 figures). Full source lists appear in the 611 primer and each child primer.

  1. U.S. Census Bureau — County Business Patterns, 2023, NAICS 61 / 611 (118,004 establishments; 3,926,820 employees; $197,656,313 thousand annual payroll; $47,515,341 thousand Q1 payroll) — Histometrics ground-truth extract. https://www.census.gov/programs-surveys/cbp.html
  2. U.S. Census Bureau — 2022 Economic Census, Concentration of Largest Firms, NAICS 61 / 611 (82,897 firms; $89,551,664 thousand receipts; CR4 5.0% / CR8 7.4% / CR20 11.9% / CR50 18.5%; HHI 11) — Histometrics ground-truth extract. https://data.census.gov/table/ECNSIZE2022.EC2200SIZECONCEN
  3. U.S. Census Bureau — 2022 NAICS Manual (definitions; the single-child structure of sector 61 = subsector 611; industry groups 6111–6117; day-care exclusion to 624410). https://www.census.gov/naics/reference_files_tools/2022_NAICS_Manual.pdf
  4. Histometrics — NAICS 611 primer (the seven-child structure and its two-economy split; enrollment cliff, ~$700B higher-ed institutional spending, Title IV / 90/10 / gainful-employment / Workforce Pell, Department of Education restructuring, college closures, ESSER cliff, AI substitution). Draws on U.S. Census, NCES, WICHE Knocking at the College Door, NACUBO, BLS, World Economic Forum, and Federal Student Aid.
  5. U.S. Census Bureau — CBP / Economic Census methodology (exclusion of government establishments and self-employed nonemployers); U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages (local-government schools ~7.29M employees) — the basis for the undercount caveat. https://www.census.gov/programs-surveys/cbp/technical-documentation/methodology.html