Company lists · Data refreshed September 2026
Top 25 After school stem programs based in the United States
RevenueBase identified 1,375 after school stem programs headquartered in the United States as of September 2026 and tracks 17,619 professional contacts across them, including 3,279 with verified work emails. New York is the largest hub.
This list covers after school stem 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 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 after school stem programs based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,476 contacts → | ||||
Indirect evidence “FIRST was founded in 1989 to inspire young people's interest and participation in science and technology.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 810 contacts → | ||||
Strong evidence “Each year, After School Matters provides life-changing after-school and summer program opportunities to nearly Chicago high school teens.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 664 contacts → | ||||
Partial evidence “Welcome to the nation’s original and most trusted youth STEM educator, where kids & teens learn from the best!” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 609 contacts → | ||||
Partial evidence “New York Edge believes that every student deserves opportunities to find a passion, develop skills, become a leader, and have a healthy and safe environment beyond school hours.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 418 contacts → | ||||
Partial evidence “Project Lead The Way (PLTW) is a national nonprofit that provides career-focused STEM education.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 334 contacts → | ||||
Partial evidence “Young Engineers offers educational enrichment programs to children across the globe through our network of franchise partners.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 316 contacts → | ||||
Indirect evidence “Moonpreneur is an innovative ed-tech startup dedicated to imparting tech entrepreneurship to children between the ages of 7 and 16.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 271 contacts → | ||||
Strong evidence “Brains & Motion Education (BAM!) is a tech-enabled company unlocking the potential of students year-round through summer camp, after-school, and structured recess enrichment…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 265 contacts → | ||||
Indirect evidence “At Engineering For Kids, we believe that every child has the potential to be an engineer.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 187 contacts → | ||||
Strong evidence “We aim to build a strong STEM workforce through academic learning and experiential engagement for high school and college students.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 184 contacts → | ||||
Partial evidence “MITES (formerly OEOP) provides transformative experiences that bolster confidence, create life-long community, and build an exciting, challenging foundation in STEM for highly…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 181 contacts → | ||||
Strong evidence “Kodely partners with school districts nationwide to boost attendance, engagement, and family involvement through turnkey, standards-aligned after-school and extended learning…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 139 contacts → | ||||
Indirect evidence “There's a place in tech for everyone.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 123 contacts → | ||||
Indirect evidence “We think we’re preparing kids for tomorrow.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 115 contacts → | ||||
Strong evidence “StudentNest offers educational programs after school, weekends, and during the summer with instructions focused on Math, Science, English, Robotics, and many STEM based programs.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 103 contacts → | ||||
Indirect evidence “Children Enrichment Education Franchise System.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 101 contacts → | ||||
Indirect evidence “EnCorps Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 94 contacts → | ||||
Strong evidence “The Robotics Education & Competition (REC) Foundation provides educators hands-on, student-led competition programs & educational resources for a diverse & inclusive STEM…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 86 contacts → | ||||
Partial evidence “Girlstart’s mission is to empower girls through STEM.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 82 contacts → | ||||
Partial evidence “Prisms of Reality defines the new paradigm in STEM education.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 79 contacts → | ||||
Partial evidence “STEAM Academy is a rapidly growing provider of Playfully Brilliant afterschool PROgrams that future-proof kids aged 4-12 by fostering 21st-century skills and inspiring a lifelong…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 78 contacts → | ||||
Strong evidence “SmartLab is a leading STEM education company and STEM curriculum provider delivering turnkey, career-connected STEM learning solutions for K-12 schools.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 75 contacts → | ||||
Partial evidence “SCFG’s mission is to foster excitement, confidence, and literacy in STEM for girls and gender-expansive youth from underrepresented communities by providing free, experiential…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 68 contacts → | ||||
Strong evidence “Challenge Island is the World's #1 STEM/STEAM Program with over 170 Locations, 7 million students served, and 9 consecutive years of rankings on Entrepreneur Magazine's Franchise…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 65 contacts → | ||||
Indirect evidence “iCAMP is dedicated to inspiring the next generation of kids to embrace their roles as creators and innovators, not just consumers.” 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: after school stem 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 after school stem programs.
- Partial evidence
- Its own public description names part of after school stem programs, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name after school stem 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 1,375 after school stem programs based in the United States
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After school stem programs 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 1,375 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 after school stem 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 “after school stem 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 after school stem 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 after school stem 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, 3,279 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.
After school stem programs by metro
- After school stem programs in New York43
- After school stem programs in Los Angeles27
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 after school stem 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 after school stem programs are there based in the United States?
RevenueBase identified 1,375 after school stem 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?
FIRST, headquartered in Manchester, tops this list with the largest team on record.
Which city has the most after school stem programs?
New York leads with 43 headquartered companies, followed by Los Angeles (27) and San Jose (24).
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 3,279 verified decision-maker contacts tracked across these 1,375 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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