Company lists · Data refreshed September 2026
Top 25 Stem charter schools based in the United States
RevenueBase identified 1,674 stem charter schools headquartered in the United States as of September 2026 and tracks 87,637 professional contacts across them, including 37,324 with verified work emails. Los Angeles is the largest hub.
This list covers stem charter schools 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 22, 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 stem charter schools based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,988 contacts → | ||||
Partial evidence “IDEA Public Schools believes that each child can go to college.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,666 contacts → | ||||
Strong evidence “National Heritage Academies (NHA) partners with community groups to build and operate public charter schools.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 3,014 contacts → | ||||
Indirect evidence “Since 2006, Success Academy has tackled educational inequities head-on by providing exceptional public education for K-12 students in New York City.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,933 contacts → | ||||
Strong evidence “Harmony Public Schools is a network of PreK-12 college preparatory public charter schools across Texas.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,450 contacts → | ||||
Strong evidence “Charter Schools USA is one of the fastest growing education management companies in the U.S.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,695 contacts → | ||||
Strong evidence “Uplift Education (Uplift) is a 501(c)(3) nonprofit organization that operates a network of 45 high-performing, tuition-free, public charter schools serving students in…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,103 contacts → | ||||
Strong evidence “Our story began in 1998 when we, as a non-profit organization, were granted charters to open 15 dropout recovery and prevention schools.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,093 contacts → | ||||
Strong evidence “Since its inception, Great Hearts has been on a mission to become a national leader in public charter schools.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,031 contacts → | ||||
Strong evidence “Mastery Charter Schools and Mastery Schools of Camden form a non-profit school network of charter, turnaround and renaissance schools in Philadelphia, PA and Camden, NJ, serving…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 928 contacts → | ||||
Strong evidence “BASIS Charter Schools have been raising the level of American education to the highest international standards for more than 20 years, since our first school opened in 1998.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 895 contacts → | ||||
Partial evidence “At KIPP DC schools, students develop the knowledge, skills, and confidence to become Washington DC’s next generation of leaders.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 878 contacts → | ||||
Indirect evidence “Work Hard.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 877 contacts → | ||||
Partial evidence “Alliance College-Ready Public Schools was founded in 2004 on the belief that all children – regardless of ZIP code, income, ability, or background – are capable of achieving at…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 836 contacts → | ||||
Strong evidence “Noble is a nonprofit organization that runs 17 charter public high schools and one middle school in the city of Chicago.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 806 contacts → | ||||
Strong evidence “KIPP SoCal Public Schools is a nonprofit organization that operates 24 tuition-free, open-enrollment charter public schools, within 20 Local Education Agencies, educating more…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 802 contacts → | ||||
Indirect evidence “Art of Problem Solving (AoPS) is dedicated to discovering, inspiring, and training the next generation of problem solvers.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 795 contacts → | ||||
Indirect evidence “Somerset Academy, Inc.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 702 contacts → | ||||
Strong evidence “We're a network of over 90 high-performing, public charter schools serving PK-12 students.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 691 contacts → | ||||
Strong evidence “DSST Public Schools (DSST) operates a network of tuition-free, open-enrollment public STEM (Science, Technology, Engineering, and Math) charter schools in Denver and Aurora…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 664 contacts → | ||||
Strong evidence “Sign up to receive our Monthly Job Blast: http://tinyurl.com/jobblastsignup The mission of Friendship Public Charter School is to provide a world-class education that motivates…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 664 contacts → | ||||
Partial evidence “Welcome to the nation’s original and most trusted youth STEM educator, where kids & teens learn from the best!” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 589 contacts → | ||||
Strong evidence “School of Science and Technology Public Schools drives academic and socio-emotional development through a college preparatory, STEM-based learning model.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 527 contacts → | ||||
Strong evidence “Developed by a coalition of San Diego civic leaders and educators, High Tech High opened in September as a small public charter school with plans to serve approximately 450…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 494 contacts → | ||||
Partial evidence “KIPP Atlanta Schools is part of the growing network of KIPP (Knowledge is Power Program) schools across the nation.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 474 contacts → | ||||
Strong evidence “KIPP is a network of free, public charter schools educating elementary, middle, and high school students.” Source: RevenueBase Database · checked Sep 22, 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: stem charter schools. 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 stem charter schools.
- Partial evidence
- Its own public description names part of stem charter schools, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name stem charter schools. 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 1,674 stem charter schools based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 37,324 reachable decision-makers.
Free signup · no credit card
Stem charter schools based in the United States at a glance
As of Sep 22, 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 1,674 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 stem charter schools, 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 “stem charter schools”. 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 stem charter schools), 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 stem charter schools, 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, 37,324 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 22, 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 stem charter schools, 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 stem charter schools are there based in the United States?
RevenueBase identified 1,674 stem charter schools 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?
Idea Public Schools, headquartered in Weslaco, tops this list with the largest team on record.
Which city has the most stem charter schools?
Los Angeles leads with 47 headquartered companies, followed by New York (45) and Chicago (39).
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 37,324 verified decision-maker contacts tracked across these 1,674 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 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,674 stem charter schools based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Stem charter schools by geography
- Stem charter schools based in Chicago, United States
- Stem charter schools based in Houston, United States
- Stem charter schools based in Los Angeles, United States
- Stem charter schools based in New York, United States
- Stem charter schools based in Philadelphia, United States
- Stem charter schools based in Washington, United States
Browse the directory
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Stem charter schools based in Chicago, United States
- Stem charter schools based in Houston, United States
- Stem charter schools based in Los Angeles, United States
- Stem charter schools based in New York, United States
- Stem charter schools based in Philadelphia, United States
- Stem charter schools based in Washington, United States