Company lists · Data refreshed September 2026
Top 25 Alternative high schools based in the United States
RevenueBase identified 372 alternative high schools headquartered in the United States as of September 2026 and tracks 7,283 professional contacts across them, including 2,783 with verified work emails. Chicago is the largest hub.
This list covers alternative high 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 19, 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 alternative high schools based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 455 contacts → | ||||
Partial evidence “ChanceLight Behavioral Health, Therapy, & Education is the nation’s leading provider of alternative and special education programs for children and young adults.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 385 contacts → | ||||
Partial evidence “Originally established by the SF Sheriff’s Department (2003) as the first charter school in the nation to operate inside of a county jail, today Five Keys is a nationally…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 323 contacts → | ||||
Strong evidence “Our mission is to provide the highest quality education for all students, especially those who have struggled in a traditional high school setting, in order to ensure their…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 321 contacts → | ||||
Strong evidence “The San Mateo Union High School District (SMUHSD) provides award-winning high school and adult education to the residents of Foster City, San Mateo, Burlingame, Hillsborough…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 202 contacts → | ||||
Indirect evidence “Since our inception in 1996, we were founded on a simple principle: Every student, regardless of their background, has the right to pursue their potential and deserves access to…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 175 contacts → | ||||
Strong evidence “The School for Integrated Academics and Technologies (SIATech) is a network of public charter high schools with campuses throughout California.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 168 contacts → | ||||
Indirect evidence “At Acceleration Academies, we believe education isn’t one-size-fits-all.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 167 contacts → | ||||
Strong evidence “Welcome to Birmingham Community Charter High School.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 152 contacts → | ||||
Indirect evidence “Gateway Academy serves 6th-12th grade students with social and academic challenges through innovative approaches to learning, physical fitness, and social awareness.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 127 contacts → | ||||
Partial evidence “VISION Urban Dove envisions a world where all children receive the high-quality education and support they need and deserve.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 101 contacts → | ||||
Partial evidence “YouthBuild Philadelphia Charter School is a 501(c)(3) organization with over 30 years of experience helping young people rebuild their lives.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 99 contacts → | ||||
Indirect evidence “At Oakmont Education, we serve students who need a second chance-and we’re looking for educators who want to make a real impact.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 92 contacts → | ||||
Indirect evidence “Portland Opportunities Industrialization Center has, for more than 55 years, provided the highest quality services in education, job training and placement, community safety, and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 80 contacts → | ||||
Indirect evidence “At Mojave River Academy, one size does not fit all.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 79 contacts → | ||||
Strong evidence “Mountain Education (ME) is a non-traditional evening public high school with many locations across North Georgia.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 73 contacts → | ||||
Partial evidence “Yellow Breeches Educational Center (YBEC) is committed to providing a quality, comprehensive, life-enhancing educational experience that is an alternative to traditional settings…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 69 contacts → | ||||
Strong evidence “The Phoenix Charter Academy Network comprises three free, open-enrollment, college preparatory public high schools in Massachusetts.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 62 contacts → | ||||
Strong evidence “YouthBuild Charter School of California (YCSC) is a project-based high school serving young people ages 16-24 who previously left or were pushed out of the traditional school…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 56 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 52 contacts → | ||||
Partial evidence “The Charter School of San Diego is an independent study, academic intervention program serving grades 6 through 12 and is a recipient of the 2015 and 2021 Malcolm Baldrige…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 50 contacts → | ||||
Partial evidence “The MLMPI Prep Academy School System is a Private Credit Recovery System of Schools.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 45 contacts → | ||||
Partial evidence “Kingsman Academy Public Charter School is an open-enrollment, tuition-free, public school that opened its doors in August 2015 in Washington, DC.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 45 contacts → | ||||
Partial evidence “The mission of EQA Schools is to provide struggling students with the skills, confidence, and experiences necessary to succeed in the education and career paths of their choice.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 44 contacts → | ||||
Strong evidence “Indian River Charter High School (IRCHS) was founded in 1998 as a small, public, non-traditional high school, with an emphasis on character development, academic achievement…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 44 contacts → | ||||
Partial evidence “Lighthouse Academy School is a unique learning option for students who have been expelled, or who are at risk of dropping out of school, yet, want their education.” Source: RevenueBase Database · checked Sep 19, 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: alternative high 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 alternative high schools.
- Partial evidence
- Its own public description names part of alternative high schools, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name alternative high 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 372 alternative high schools based in the United States
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Alternative high schools based in the United States at a glance
As of Sep 19, 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 372 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 alternative high 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 “alternative high 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 alternative high 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 alternative high 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, 2,783 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 19, 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 alternative high 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 alternative high schools are there based in the United States?
RevenueBase identified 372 alternative high 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?
Chancelight Behavioral Health, Therapy, & Education, headquartered in Brentwood, tops this list with the largest team on record.
Which city has the most alternative high schools?
Chicago leads with 10 headquartered companies, followed by Tucson (9) 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 2,783 verified decision-maker contacts tracked across these 372 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 19, 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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