Company lists · Data refreshed September 2026

Top 25 College prep organizations based in Houston, United States

Name: College prep organizations based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 82 companies tracked

RevenueBase identified 82 college prep organizations headquartered in Houston, United States as of September 2026 and tracks 1,290 professional contacts across them, including 549 with verified work emails. New York is the largest hub.

This list covers college prep organizations 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 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

82Companies

1,290Contacts tracked

549Verified emails

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The 25 largest college prep organizations based in Houston, United States

Ranked by team size

Top 25 of 82 college prep organizations based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to college prep organizations: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	National Math And Science Initiative	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	196 contacts →
	Indirect evidence “The National Math and Science Initiative is a national nonprofit organization dedicated to transforming math and science education in today’s classrooms and ensuring that all…” Source: RevenueBase Database · checked Sep 19, 2026
2	Houston Christian High School	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	160 contacts →
	Indirect evidence “Houston Christian High School inspires students to become leaders in a close-knit community.” Source: RevenueBase Database · checked Sep 19, 2026
3	Cristo REY Jesuit College Preparatory Of Houston	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	88 contacts →
	Indirect evidence “Cristo Rey Jesuit, a Catholic high school, combines personal responsibility, academic rigor, and a corporate work-study program to empower students of all faiths from economically…” Source: RevenueBase Database · checked Sep 19, 2026
4	Westbury Christian School	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	81 contacts →
	Indirect 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 19, 2026
5	Saint Thomas' Episcopal School	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	75 contacts →
	Partial 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 19, 2026
6	The FAY School	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	64 contacts →
	Indirect evidence “At The Fay School, our core values center on providing an educational experience that ensures our students are Prepared, Well-Rounded, and Articulate-three essential cornerstones…” Source: RevenueBase Database · checked Sep 19, 2026
7	Northland Christian School	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	56 contacts →
	Indirect 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 19, 2026
8	General Academic, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	48 contacts →
	Indirect evidence “General Academic is an integrated education services and media company.” Source: RevenueBase Database · checked Sep 19, 2026
9	The Enrichery	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	46 contacts →
	Partial evidence “The Enrichery is an education company that strives to enrich the lives of students through academic coaching, college counseling, standardized test preparation, and educational…” Source: RevenueBase Database · checked Sep 19, 2026
10	Lutheran South Academy	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	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 19, 2026
11	Firat Education	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	27 contacts →
	Strong evidence “At Firat Education, we IDENTIFY and continually ASSESS end goals, whether this is high school, college, or graduate school, that are best fit and PROVIDE academic, test prep, and…” Source: RevenueBase Database · checked Sep 19, 2026
12	Langham Creek High School	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1-10	23 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
13	Memorial High School	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	23 contacts →
	Partial evidence “Memorial High School (MHS) is a comprehensive public high school (grades 9 -12) offering a rigorous college preparatory program that supports excellence in academics and pride in…” Source: RevenueBase Database · checked Sep 19, 2026
14	Cypress Ridge High School	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
15	Cypress Falls High School	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect evidence “Cypress Falls High School is a company based out of 9811 HUFFMEISTER RD, HOUSTON, Texas, United States.” Source: RevenueBase Database · checked Sep 19, 2026
16	Elevate Collegiate Charter School	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 19, 2026
17	All-In-One Academics	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1-10	11 contacts →
	Partial evidence “All-in-One Academics is a Houston-based, comprehensive college admissions company.” Source: RevenueBase Database · checked Sep 19, 2026
18	Carnegie Vanguard High School	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	11 contacts →
	Indirect evidence “Carnegie Vanguard High School is a company based out of 1501 TAFT, HOUSTON, Texas, United States.” Source: RevenueBase Database · checked Sep 19, 2026
19	Invictus Prep	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	9 contacts →
	Strong evidence “In Latin, Invictus means “invincible.” Based in Houston, Invictus Prep is a female-owned academic and college readiness startup founded by two siblings who both worked extensively…” Source: RevenueBase Database · checked Sep 19, 2026
20	Lutheran North Academy	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	8 contacts →
	Indirect evidence “Lutheran North Academy provides students in the 6-12 grade with Excellence in Academics and Meaningful Ministry.” Source: RevenueBase Database · checked Sep 19, 2026
21	Harmony School Of Discovery - Houston	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	7 contacts →
	Indirect evidence “Harmony School Of Discovery - Houston is a company based out of 6270 Barker Cypress Rd, Houston, Texas, United States.” Source: RevenueBase Database · checked Sep 19, 2026
22	Grace Christian Academy	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “GCA proudly offers a successful program for Pre-K through 12th grade.” Source: RevenueBase Database · checked Sep 19, 2026
23	Horizon Leadership Academy	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “HLA, where academic excellence meets character development and community involvement.” Source: RevenueBase Database · checked Sep 19, 2026
24	To The TOP Education Group	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1-10	6 contacts →
	Partial evidence “To The Top Education Group is a full-service education consulting firm that helps Asian and Asian American students study at selective high schools and colleges.” Source: RevenueBase Database · checked Sep 19, 2026
25	Minds Matter Houston	Partial evidence	Houston, United StatesHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “Minds Matter is a comprehensive and highly-successful three-year program that empowers young people from low-income families to achieve college readiness and success.” Source: RevenueBase Database · checked Sep 19, 2026

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: college prep organizations. 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 college prep organizations.
Partial evidence: Its own public description names part of college prep organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name college prep organizations. 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 82 college prep organizations based in Houston, United States

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College prep organizations based in Houston, United States at a glance

As of Sep 19, 2026

42.6%Verified-email coverage

15.7Average contacts per company

1-10Median size (employees)

354.9%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

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 82 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 college prep organizations, 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 “college prep organizations”. 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 college prep organizations), 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 college prep organizations, 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, 549 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.

College prep organizations by metro in the United States

College prep organizations in New York291
College prep organizations in Los Angeles144
College prep organizations in Chicago115
College prep organizations in Houston82
College prep organizations in San Francisco68
College prep organizations in Washington68
College prep organizations in Atlanta66
College prep organizations in Miami63
College prep organizations in Austin60
College prep organizations in Philadelphia49
College prep organizations in Boston48
College prep organizations in Dallas48
College prep organizations in San Diego47
College prep organizations in Bronx45
College prep organizations in Irvine41
College prep organizations in San Jose38
College prep organizations in Denver35
College prep organizations in Oakland29
College prep organizations in Phoenix28
College prep organizations in Baltimore27
College prep organizations in Cambridge26
College prep organizations in Columbia26
College prep organizations in Charlotte25
College prep organizations in Nashville25
College prep organizations in Orlando25
College prep organizations in Seattle25

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 college prep organizations, 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 college prep organizations are there based in Houston, United States?

RevenueBase identified 82 college prep organizations 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?

National Math And Science Initiative, headquartered in Houston, tops this list with the largest team on record.

Which city has the most college prep organizations?

New York leads with 291 headquartered companies, followed by Los Angeles (144) and Chicago (115).

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 549 verified decision-maker contacts tracked across these 82 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.