Company lists · Data refreshed September 2026
Top 25 K-12 software developers based in the United States
RevenueBase identified 444 k-12 software developers headquartered in the United States as of September 2026 and tracks 34,798 professional contacts across them, including 14,139 with verified work emails and 13,517 with mobile numbers. New York is the largest hub.
This list covers k-12 software developers 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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.
The 25 largest k-12 software developers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,799 | ||||
“Please visit us at our new company page, HMH.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,291 | ||||
“PowerSchool is a leading provider of cloud-based software for K-12 education in North America.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,856 | ||||
“Amplify helps teachers bring delight and rigor to students every day.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,384 | ||||
“At Curriculum Associates, we believe in the potential of every child and are changing the face of education technology with award-winning learning programs like i-Ready that serve…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,745 | ||||
“As part of the Anthology ecosystem, Blackboard Learn is designed to help students and educators achieve their goals through dynamic, data-informed experiences.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,700 | ||||
“Built upon a 130-year history, Savvas is recognized as an industry leader and innovator in education.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,303 | ||||
“At IXL Learning, we are passionate about improving learning for all.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 8 | 661 | ||||
“Promethean is a leading education technology company working to transform the way the world learns and collaborates.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 9 | 599 | ||||
“Carnegie Learning is a leading provider of K–12 education technology, curriculum, and professional learning solutions.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 10 | 590 | ||||
“Less time on tasks.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 11 | 557 | ||||
“Built for teachers, by teachers, Toddle is an AI-powered teaching & learning platform for progressive K-12 schools & districts.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 12 | 540 | ||||
“Quizlet is a leading consumer learning brand that builds learning tools to inspire and empower students and teachers.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 13 | 464 | ||||
“With over a decade of experience, GoGuardian delivers best-in-class solutions designed specifically for K–12 schools.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 14 | 426 | ||||
“Cambium Learning® Group is the education essentials company, providing award-winning education technology and services for PreK-12 markets.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 15 | 311 | ||||
“We believe technology is a powerful lever to make education equitable for all and the fastest way to improve educational outcomes now.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 16 | 276 | ||||
“Trusted by 25 million educators, students, and families worldwide, Seesaw is your LMS with AI built in.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 17 | 269 | ||||
“ExploreLearning is an education technology company creating seriously fun solutions for the most critical challenges in K-12 STEM learning.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 18 | 234 | ||||
“Kiddom is the coherent instructional system for K-12 and the creator of Learning Intelligence Technology (LIT).” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 19 | 233 | ||||
“We accelerate learning by applying proven research on how the brain learns.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 20 | StrongmindIndirect evidence | 196 | |||
“StrongMind is redefining what modern education can be.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 21 | 187 | ||||
“Kami is a family of digital products that support better instructional practice by making learning visible, accessible, and meaningful in everyday classrooms.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 22 | 185 | ||||
“We strive for nothing less than realizing the full potential of education; providing effective, data-driven solutions designed to support a new era of innovation, growth and…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 23 | Virtucom, INCStrong evidence | 162 | |||
“Virtucom provides personalized EdTech solutions & services to K-12 school systems across the country and has proudly done so since 1995.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 24 | 141 | ||||
“Istation and Amira have united to bring you a new era in student growth - the Intelligent Growth Engine.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 25 | 139 | ||||
“Hawkes Learning specializes in educational technology & publishing.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 444 k-12 software developers based in the United States
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K-12 software developers based in the United States at a glance
As of Sep 4, 2026Companies by employee count
Verified emails by last verification
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 k-12 software developers, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “k-12 software developers”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among k-12 software developers, 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 an evidence 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, 14,139 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 4, 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.
K-12 software developers by metro
- K-12 software developers in New York33
Frequently asked
How many k-12 software developers are there based in the United States?
RevenueBase identified 444 k-12 software developers 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?
Houghton Mifflin Harcourt, headquartered in Troy, tops this list with the largest team on record.
Which city has the most k-12 software developers?
New York leads with 33 headquartered companies, followed by Austin (10) and Los Angeles (9).
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 14,139 verified decision-maker contacts tracked across these 444 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 4, 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.
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