Company lists · Data refreshed September 2026

Top 25 Environmental education programs based in the United States

Name: Environmental education programs based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 553 companies tracked

RevenueBase identified 553 environmental education programs headquartered in the United States as of September 2026 and tracks 8,017 professional contacts across them, including 2,630 with verified work emails. New York is the largest hub.

This list covers environmental education programs 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 15, 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 15, 2026 86% judged on-target in blind review

553Companies

8,017Contacts tracked

2,630Verified emails

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The 25 largest environmental education programs based in the United States

Ranked by team size

Top 25 of 553 environmental education programs based in the United States, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to environmental education programs: 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	Student Conservation Association	Strong evidence	Arlington, VA, United StatesHQ checked Sep 15, 2026	201-500	795 contacts →
	Strong evidence “The Student Conservation Association (SCA) is the largest provider of hands-on environmental conservation programs for youth and adults.” Source: RevenueBase Database · checked Sep 15, 2026
2	Mass Audubon	Indirect evidence	Lincoln, MA, United StatesHQ checked Sep 15, 2026	201-500	554 contacts →
	Indirect evidence “Mass Audubon is the largest nature-based conservation organization in New England.” Source: RevenueBase Database · checked Sep 15, 2026
3	University Of Washington, Environmental Studies	Strong evidence	Seattle, WA, United StatesHQ checked Sep 15, 2026	n/a	244 contacts →
	Strong evidence “The Program on the Environment is an innovative experiment in interdisciplinary environmental education combining natural science, the human dimension, and community-based…” Source: RevenueBase Database · checked Sep 15, 2026
4	ARC After School & Experiential Education	Partial evidence	Torrance, CA, United StatesHQ checked Sep 15, 2026	501-1,000	234 contacts →
	Partial evidence “Arc is an award-winning, nationally recognized after school and experiential education provider in southern California.” Source: RevenueBase Database · checked Sep 15, 2026
5	Naturebridge	Strong evidence	Sausalito, CA, United StatesHQ checked Sep 15, 2026	201-500	188 contacts →
	Strong evidence “Environmental science in nature’s classroom NatureBridge provides hands-on environmental science programs for young people.” Source: RevenueBase Database · checked Sep 15, 2026
6	The School For Field Studies	Indirect evidence	Beverly, MA, United StatesHQ checked Sep 15, 2026	51-200	139 contacts →
	Indirect evidence “The School for Field Studies (SFS) is a unique 501c3 nonprofit academic institution headquartered in Beverly, MA.” Source: RevenueBase Database · checked Sep 15, 2026
7	Teton Science Schools	Partial evidence	Jackson, WY, United StatesHQ checked Sep 15, 2026	51-200	118 contacts →
	Partial evidence “Teton Science Schools connects people, place, and nature through education.” Source: RevenueBase Database · checked Sep 15, 2026
8	Islandwood	Strong evidence	Bainbridge Island, WA, United StatesHQ checked Sep 15, 2026	51-200	112 contacts →
	Strong evidence “As an environmental education nonprofit, we believe there are many paths to creating a more sustainable and equitable world.” Source: RevenueBase Database · checked Sep 15, 2026
9	Leave NO Trace	Strong evidence	Boulder, CO, United StatesHQ checked Sep 15, 2026	11-50	112 contacts →
	Strong evidence “Leave No Trace is a member-funded 501(c)(3) non-profit organization providing Leave No Trace programs, education, training, and outreach in all 50 states and more than 100…” Source: RevenueBase Database · checked Sep 15, 2026
10	Chewonki Foundation	Strong evidence	Wiscasset, ME, United StatesHQ checked Sep 15, 2026	51-200	101 contacts →
	Strong evidence “A non-profit, year-round environmental education center on the coast of Maine in Wiscasset - offering summer camps, wilderness trips, a high school semester and school year…” Source: RevenueBase Database · checked Sep 15, 2026
11	Solar ONE	Strong evidence	Long Island City, NY, United StatesHQ checked Sep 15, 2026	51-200	99 contacts →
	Strong evidence “Solar One is a non-profit, environmental education organization that fosters sustainable practices and environmental equity across New York City.” Source: RevenueBase Database · checked Sep 15, 2026
12	Pali Institute	Strong evidence	Running Springs, CA, United StatesHQ checked Sep 15, 2026	11-50	91 contacts →
	Strong evidence “Pali Institute is a rigorous, fast-paced and fun outdoor education program that constantly strives to develop exciting outdoor curriculum for students in grades 4-12.” Source: RevenueBase Database · checked Sep 15, 2026
13	Sprout UP	Strong evidence	Palo Alto, CA, United StatesHQ checked Sep 15, 2026	11-50	90 contacts →
	Strong evidence “Sprout Up (formerly Environmental Education for the Next Generation) is a 501(c)(3) nonprofit organization founded by undergraduate students at the University of California, Santa…” Source: RevenueBase Database · checked Sep 15, 2026
14	Conservation Corps North BAY	Indirect evidence	Novato, CA, United StatesHQ checked Sep 15, 2026	51-200	85 contacts →
	Indirect evidence “Conservation Corps North Bay's mission is to develop youth and conserve natural resources for a resilient, sustainable, and equitable community.” Source: RevenueBase Database · checked Sep 15, 2026
15	Bridging The GAP	Strong evidence	Kansas City, MO, United StatesHQ checked Sep 15, 2026	11-50	83 contacts →
	Strong evidence “Bridging The Gap brings people together to protect and restore the web of life on Earth and foster inclusive, thriving communities through environmental education, innovation, and…” Source: RevenueBase Database · checked Sep 15, 2026
16	Walking Mountains	Strong evidence	Avon, CO, United StatesHQ checked Sep 15, 2026	11-50	79 contacts →
	Strong evidence “Walking Mountains is a leading environmental education organization that fosters stewardship and builds transformative partnerships across Eagle County, Colorado.” Source: RevenueBase Database · checked Sep 15, 2026
17	Marine Science Institute	Strong evidence	Redwood City, CA, United StatesHQ checked Sep 15, 2026	11-50	78 contacts →
	Strong evidence “Since our establishment in 1970, the Marine Science Institute has been at the forefront of environmental education in the San Francisco Bay Area.” Source: RevenueBase Database · checked Sep 15, 2026
18	Sterling College	Indirect evidence	Craftsbury Common, VT, United StatesHQ checked Sep 15, 2026	11-50	75 contacts →
	Indirect evidence “To advance ecological thinking and action through affordable experiential learning that prepares people to be knowledgeable, skilled, and responsible leaders in the communities in…” Source: RevenueBase Database · checked Sep 15, 2026
19	North Cascades Institute	Partial evidence	Sedro-woolley, WA, United StatesHQ checked Sep 15, 2026	11-50	67 contacts →
	Partial evidence “We inspire and empower environmental stewardship for all through transformative experiences in nature.” Source: RevenueBase Database · checked Sep 15, 2026
20	Green Corps	Partial evidence	Denver, CO, United StatesHQ checked Sep 15, 2026	11-50	62 contacts →
	Partial evidence “Today, the state of our environment is a household issue: global warming is in the news every day, students across the country are rallying to green their campuses, celebrities…” Source: RevenueBase Database · checked Sep 15, 2026
21	Nature's Classroom INC	Strong evidence	Charlton, MA, United StatesHQ checked Sep 15, 2026	11-50	59 contacts →
	Strong evidence “Nature's Classroom is a residential environmental education program located in Charlton, Massachusetts.” Source: RevenueBase Database · checked Sep 15, 2026
22	Kalamazoo Nature Center	Partial evidence	Kalamazoo, MI, United StatesHQ checked Sep 15, 2026	51-200	56 contacts →
	Partial evidence “Kalamazoo Nature Center is an environmental services company based out of Kalamazoo, Michigan.” Source: RevenueBase Database · checked Sep 15, 2026
23	Life LAB	Indirect evidence	Santa Cruz, CA, United StatesHQ checked Sep 15, 2026	11-50	56 contacts →
	Indirect evidence “Life Lab is a national leader in garden-based learning.” Source: RevenueBase Database · checked Sep 15, 2026
24	North American Association For Environmental Education Naaee	Strong evidence	Washington, DC, United StatesHQ checked Sep 15, 2026	11-50	55 contacts →
	Strong evidence “For more than five decades, NAAEE has been a leader in promoting excellence in environmental education throughout North America.” Source: RevenueBase Database · checked Sep 15, 2026
25	Irvine Nature Center	Indirect evidence	Owings Mills, MD, United StatesHQ checked Sep 15, 2026	11-50	54 contacts →
	Indirect evidence “At Irvine, we guide learning.” Source: RevenueBase Database · checked Sep 15, 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: environmental education programs. 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 environmental education programs.
Partial evidence: Its own public description names part of environmental education programs, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental education programs. 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 553 environmental education programs based in the United States

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Environmental education programs based in the United States at a glance

As of Sep 15, 2026

32.8%Verified-email coverage

14.5Average contacts per company

1-10Median size (employees)

2.2%Largest-city concentration · New York

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

346

11-50

161

51-200

201-500

501-1,000

1,001-5,000

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 553 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 environmental education programs, 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 “environmental education programs”. 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 environmental education programs), 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 environmental education programs, 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, 2,630 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 15, 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 environmental education programs, 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 environmental education programs are there based in the United States?

RevenueBase identified 553 environmental education programs 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?

Student Conservation Association, headquartered in Arlington, tops this list with the largest team on record.

Which city has the most environmental education programs?

New York leads with 12 headquartered companies, followed by Portland (8) and Washington (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 2,630 verified decision-maker contacts tracked across these 553 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 15, 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.