Company lists · Data refreshed November 2026

Top 25 Prep schools based in Washington, United States

RevenueBase identified 55 company matches for prep schools associated with Washington, United States as of November 2026 and tracks 2,464 professional contacts across them, including 1,246 with verified work emails. Across the United States, New York is the largest hub for this category (226 companies); Washington has 55.

This list covers company matches for prep schools associated with Washington, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
55Companies
2,464Contacts tracked
1,246Verified emails
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The 25 largest prep schools based in Washington, United States

Ranked by team size
Top 25 of 55 company matches for prep schools based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWashington, DC, United StatesHQ recorded Nov 6, 2026201-500318 contacts →

Exact match

“Georgetown Day School offers an educational program that fosters a love of learning while providing serious instruction in the academic disciplines, the arts, and physical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchWashington, DC, United StatesHQ recorded Nov 6, 2026201-500299 contacts →

Exact match

“Washington International School (WIS) is a coeducational independent school (private school) offering 900+ students a challenging international curriculum and rich language…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200163 contacts →

Exact match

“MARET SCHOOL, founded in 1911, is a vibrant, K-12, independent school in Washington, DC.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200153 contacts →

Exact match

“St.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200147 contacts →

Exact match

“Chavez Schools is a innovative secondary public charter school that prepares students to succeed in competitive colleges, and empowers them to become the civic leaders of the next…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200122 contacts →

Exact match

“Established in 1965,Lowell School is an independent school serving students from 2.5 years of age through 8th grade, located on eight acres adjacent to Rock Creek Park in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchWashington, DC, United StatesHQ recorded Nov 6, 2026201-500115 contacts →

Exact match

“The SEED Foundation is a national nonprofit that partners with urban communities to provide innovative educational opportunities that prepare underserved students for success in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200107 contacts →

Exact match

“The Lab School of Washington is an innovative learning community fostering scholarship and creativity in students with language-based learning differences.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202611-5095 contacts →

Exact match

“Founded in the heart of Washington, D.C, Annunciation Catholic School is a vibrant Pre-K3 through Grade 8 Catholic school committed to academic excellence, faith formation, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-20083 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-20074 contacts →

Exact match

“At The Field School, we honor the individuality of each student by fostering an environment that is creative, connected, and inclusive.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“Capitol Hill Day School: Where curious minds explore, engage, and connect.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“The SEED School of Washington, D.C.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-20071 contacts →

Exact match

“Located in Washington D.C, St.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“Digital Pioneers Academy is a tuition-free public charter middle and high school in Southeast DC, open to all students in grades 6 through 12, Our mission is to develop the next…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWashington, CT, United StatesHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“Rumsey Hall School is an independent, coed junior boarding (6 - 9) and day (Pre K - 9) school in Washington, Connecticut.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-20059 contacts →

Exact match

“DC Scholars Public Charter School prepares students to attend and succeed academically in high school and college, and DC Scholars provides students with a foundation of life…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchWashington, NC, United StatesHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“Washington Montessori Public Charter School (WMPCS) is a non-profit, tuition-free alternative to traditional public schools with an annual budget of $3.5M.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchWashington, United StatesHQ recorded Nov 6, 202611-5039 contacts →

Exact match

“At The Sojourner Truth School, we are passionate about the education of the whole student.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Washington Global PCS is an award-winning college preparatory middle school with an international focus.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“We are a team of teachers and education professionals devoted to inspiring a love of learning.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Moxie College Counseling helps high-school and college-bound students thoughtfully map out their goals and a plan to reach them, while empowering them to discover a true sense of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Parkmont is a small, progressive, co-ed independent school serving grades 6-12 in Northwest Washington, DC.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-2009 contacts →

Exact match

“Somerset Prep DC Public Charter School Our MISSION The mission of Somerset Prep DC Public Charter School is to provide an individualized, academically rigorous, and engaging…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchWashington, DC, United StatesHQ recorded Nov 6, 20261-108 contacts →

Exact match

“We are a private, independent high school program that welcomed our first class Fall 2019.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 55 prep schools based in Washington, United States

See the full list, filter by size, metro and specialty, and access 1,246 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Prep schools based in Washington, United States at a glance

As of Nov 6, 2026
50.6%Verified-email coverage
44.8Average contacts per company
11-50Median size (employees)
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
19
11-50
13
51-200
20
201-500
3

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 55 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Washington, United States whose business descriptions match “prep schools” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,246 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “prep schools”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many prep schools are there based in Washington, United States?

RevenueBase identified 55 company matches for prep schools associated with Washington, United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Georgetown DAY School tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most prep schools?

New York leads the United States with 226 company records, followed by Chicago (140) and Los Angeles (102). Washington has 55.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,246 professional contacts with verified work emails tracked across these 55 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.