Company lists · Data refreshed September 2026
Top 25 Charter school staffing companies based in the United States
RevenueBase identified 226 charter school staffing companies headquartered in the United States as of September 2026 and tracks 35,167 professional contacts across them, including 2,498 with verified work emails. New York is the largest hub.
This list covers charter school staffing companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest charter school staffing companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 10,421 contacts → | ||||
Strong evidence “As leaders in the education staffing space since ESS specializes in placing qualified staff in daily, long-term, and permanent K-12 school district positions, including substitute…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 4,828 contacts → | ||||
Partial evidence “Kelly Education is one of the country’s most trusted sources of education talent, serving thousands of schools and institutions and millions of students across the U.S.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 4,551 contacts → | ||||
Partial evidence “America’s #1 choice for educational staffing.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,769 contacts → | ||||
Indirect evidence “Scoot Education helps create exceptional experiences in education by thoughtfully placing the right educator, at the right place, at the right time.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,094 contacts → | ||||
Partial evidence “Teachers On Call, a Kelly Education® company, is a substitute staffing service that hires licensed teachers, paraeducators, tutors, and early childhood education staff.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,003 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 952 contacts → | ||||
Indirect evidence “Our healthcare and educational professionals change lives every day, all over the country, simply by doing a job they love.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 486 contacts → | ||||
Partial evidence “PNP Staffing Group believes in the power of nonprofits to make a difference, and we provide the staff to help make that difference.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 394 contacts → | ||||
Partial evidence “Academica is one of the nation’s longest-serving and most successful education service organizations, providing professional services and related support to schools.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 363 contacts → | ||||
Indirect evidence “The Education Team provides fully qualified and pre-screened on-demand substitute teachers for grades K through 12.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 347 contacts → | ||||
Strong evidence “Renhill Group and Renhill HR On Demand -Renhill Group An educational substitute staffing firm that places substitute staff into school systems throughout mainly NW and NE Ohio.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 295 contacts → | ||||
Strong evidence “School Professionals is an educational staffing service whose sole focus is recruiting, credentialing, interviewing and providing highly qualified and screened substitute and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 273 contacts → | ||||
Partial evidence “We focus on our core services of substitute recruiting, human resources, scheduling and employment, so that schools may focus on core services of instruction, curriculum, student…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 261 contacts → | ||||
Indirect evidence “Spur believes educators shouldn't be buried in paperwork, complicated systems, and costs–they should have more time and money for what matters: their students.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 247 contacts → | ||||
Strong evidence “Charter School Associates is a leading education management company, proudly serving over students throughout the state of Florida.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 231 contacts → | ||||
Indirect evidence “ESS South Central is your FULL SERVICE Substitute Teacher Solution!” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 205 contacts → | ||||
Strong evidence “Charter One is a service provider to PK-12 Charter Schools.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 204 contacts → | ||||
Strong evidence “iLEAD California is a service provider for tuition-free public charter schools serving grades TK-12 in Los Angeles, Orange, Ventura, San Bernardino, and Kern Counties.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 201 contacts → | ||||
Partial evidence “Established in 1995, Mediscan is a provider of highly qualified professionals to schools and healthcare facilities throughout the country.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 174 contacts → | ||||
Strong evidence “A growing number of Houstonians are recognizing the strengths of attending a charter school, where the benefits are unmistakably clear.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 174 contacts → | ||||
Strong evidence “As a leader in behavioral health, mental health, and school staffing, U.S.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 165 contacts → | ||||
Strong evidence “Sub Teacher Source (STS) is an educational staffing agency connecting high quality substitute teachers to public, private, and charter schools in need.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 156 contacts → | ||||
Partial evidence “At MJ Care, we help schools do what they do best: support students.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 138 contacts → | ||||
Strong evidence “Pediatric Developmental Services is the go-to solution for school districts nationwide grappling with staffing shortages.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 137 contacts → | ||||
Strong evidence “Penmac Education Staffing provides substitute teachers, paraprofessionals, and other school staff to a wide variety of school districts.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: charter school staffing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names charter school staffing companies.
- Partial evidence
- Its own public description names part of charter school staffing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name charter school staffing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 226 charter school staffing companies based in the United States
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Charter school staffing companies based in the United States at a glance
As of Sep 27, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 226 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among charter school staffing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “charter school staffing companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names charter school staffing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among charter school staffing companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 2,498 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names charter school staffing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many charter school staffing companies are there based in the United States?
RevenueBase identified 226 charter school staffing companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
ESS, headquartered in Knoxville, tops this list with the largest team on record.
Which city has the most charter school staffing companies?
New York leads with 9 headquartered companies, followed by Atlanta (8) and Los Angeles (8).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,498 verified decision-maker contacts tracked across these 226 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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