Company lists · Data refreshed September 2026
Top 25 Independent high schools based in Houston, United States
RevenueBase identified 88 independent high schools headquartered in Houston, United States as of September 2026 and tracks 8,669 professional contacts across them, including 4,106 with verified work emails. New York is the largest hub.
This list covers independent high schools headquartered in Houston, 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 20, 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 independent high schools based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,933 contacts → | ||||
Partial evidence “Harmony Public Schools is a network of PreK-12 college preparatory public charter schools across Texas.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,519 contacts → | ||||
Partial evidence “KIPP Texas Public Schools is an open-enrollment, free public charter school network of 54 schools with more than Pre-K – 12 students across the state and an impact of 30 years in…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 605 contacts → | ||||
Indirect evidence “St.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 192 contacts → | ||||
Partial evidence “Second Baptist School is a Christian, college-preparatory school in Houston, Texas dedicated to educational excellence from PK3 through grade 12.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 174 contacts → | ||||
Partial 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 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 160 contacts → | ||||
Strong evidence “Houston Christian High School inspires students to become leaders in a close-knit community.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 144 contacts → | ||||
Partial evidence “Southwest Public Schools is a state charter, governed by the Texas Education Agency, open in with the goal of providing an academic program that celebrates diversity of student…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 113 contacts → | ||||
Partial evidence “Annunciation Orthodox School, having grown from a ministry of the Annunciation Greek Orthodox Cathedral, celebrates the diverse and individual qualities of all children and their…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 105 contacts → | ||||
Indirect evidence “St.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 102 contacts → | ||||
Indirect evidence “Vision An elite education for all children.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 87 contacts → | ||||
Strong evidence “River Oaks Baptist School (ROBS) is an independent Preschool-Eighth Christian school that educates the whole child through its dual mission: ambitious academics rooted in abiding…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 87 contacts → | ||||
Partial evidence “Located in Houston's Third Ward, Yellowstone Schools is committed to partnering with students and families, regardless of financial means, to provide an excellent education…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 81 contacts → | ||||
Partial evidence “Westbury Christian School is a vibrant community of learners in Southwest Houston that is a reflection of the Kingdom: Faithful, Wise, and Diverse.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 75 contacts → | ||||
Strong evidence “We are proud to be named the #1 Best Christian High School in the Houston Area for 2019 by Niche, a website that ranks schools and colleges throughout the U.S.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 66 contacts → | ||||
Strong evidence “Mission: Étoile Academy Charter School ensures that every student in grades K through 8 has the academic and character foundation necessary to succeed in high school, graduate…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 56 contacts → | ||||
Partial evidence “Northland Christian School is committed to preparing all students for the world of tomorrow and to offering each student directed academic planning, giving them the best…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 51 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 42 contacts → | ||||
Indirect evidence “St.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 36 contacts → | ||||
Partial evidence “Houston Classical Charter School (“Houston Classical”) was chartered by the Texas Education Agency (TEA) to open in Houston in August 2020 beginning with kindergarten and first…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 35 contacts → | ||||
Partial evidence “Lutheran South Academy (LSA) is a fully accredited PreK-3 through 12th grade college preparatory school located on the southeast side of Houston, TX.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 32 contacts → | ||||
Indirect evidence “We offer quality Christian education to families with the understanding that we are developing living stones for tomorrow.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 26 contacts → | ||||
Partial evidence “Beatrice Mayes Institute Charter School is a primary and secondary education institute based in Houston, TX” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 24 contacts → | ||||
Strong evidence “We are a Houston-based private elementary, middle and high school that provides individualized education for one-of-a-kind students.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 23 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 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: independent 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 independent high schools.
- Partial evidence
- Its own public description names part of independent high schools, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name independent 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 88 independent high schools based in Houston, United States
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Independent high schools based in Houston, United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 88 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 independent 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 Houston, United States whose own description of what they do matches “independent 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 independent 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 independent high schools, and records with no verified work email. Companies headquartered outside Houston 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, 4,106 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 20, 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.
Independent high schools by metro in the United States
- Independent high schools in New York105
- Independent high schools in Houston88
- Independent high schools in Los Angeles66
- Independent high schools in Chicago63
- Independent high schools in Phoenix52
- Independent high schools in Miami45
- Independent high schools in Bronx41
- Independent high schools in Dallas41
- Independent high schools in Orlando38
- Independent high schools in Philadelphia38
- Independent high schools in Jacksonville34
- Independent high schools in Indianapolis31
- Independent high schools in Washington31
- Independent high schools in Memphis30
- Independent high schools in Richmond30
- Independent high schools in San Francisco30
- Independent high schools in San Antonio29
- Independent high schools in Tucson26
- Independent high schools in Austin25
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 independent 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 independent high schools are there based in Houston, United States?
RevenueBase identified 88 independent high schools headquartered in Houston, 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?
Harmony Public Schools, headquartered in Houston, tops this list with the largest team on record.
Which city has the most independent high schools?
New York leads with 105 headquartered companies, followed by Houston (88) and Los Angeles (66).
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 4,106 verified decision-maker contacts tracked across these 88 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 20, 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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