Company lists · Data refreshed August 2026

Top 25 Assessment software developers based in the United States

There are 157 assessment software developers headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 7,838 professional contacts across them, including 2,710 with verified work emails and 2,964 with mobile numbers. San Francisco is the largest hub.

This list covers assessment 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 August 31, 2026.

157Companies
7,838Contacts tracked
2,710Verified emails
2,964Mobile numbers
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The 25 largest assessment software developers based in the United States

Ranked by team size
Top 25 of 157 assessment software developers based in the United States, ranked by team size, largest first. Data refreshed Aug 31, 2026. Evidence rates how directly each company's own description names assessment software developers: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContactsVerified emails
1
PrometricIndirect evidence

“Prometric is a global leader in credentialing and skills development.”

Source: company website · checked Aug 31, 2026
White Marsh, MD, United States1,001-5,0002,096552
2
Ascend LearningIndirect evidence

“Ascend Learning is a leading healthcare and learning technology company.”

Source: company website · checked Aug 31, 2026
Burlington, MA, United States1,001-5,0001,288969
3
Cambium AssessmentPartial evidence

“As the leading experts in K-12 education assessment, Cambium Assessment delivers innovative, reliable, and actionable technologies.”

Source: company website · checked Aug 31, 2026
Reston, VA, United States501-1,000526392
4
Meazure LearningIndirect evidence

“Meazure Learning provides secure, reliable, and convenient test development, administration, and delivery solutions for academic and professional credentialing programs.”

Source: company website · checked Aug 31, 2026
Mclean, VA, United States1,001-5,000396181
5
ScantronPartial evidence

“Legacy strong, future focused.Scantron delivers technology-enabled assessment, analytics, and data services that empower organizations across education, business, and government…”

Source: company website · checked Aug 31, 2026
Lancaster, PA, United States51-20031130
6
Kryterion, INCIndirect evidence

“At Kryterion, we know a thing or two about test delivery.”

Source: company website · checked Aug 31, 2026
Phoenix, AZ, United States201-50023462
7
Questar Assessment INCIndirect evidence
Source: company website · checked Aug 31, 2026
Apple Valley, MN, United States1,001-5,00017342
8
Surpass AssessmentPartial evidence

“Surpass is a global leader in digital assessment services, providing credentialing organizations worldwide with an extensive test center network, high-quality online proctoring…”

Source: company website · checked Aug 31, 2026
West Chester, PA, United States51-20011585
9
Riverside PublishingPartial evidence

“Riverside Publishing is a leading publisher of superior educational, cognitive, and developmental assessment products in the United States, serving the K–12 educational and…”

Source: company website · checked Aug 31, 2026
Rolling Meadows, IL, United States201-50011411
10
EskillPartial evidence

“eSkill is a pre-hire assessment solution designed to help organizations enhance their hiring processes by providing customizable assessments tailored to specific roles and skills.”

Source: company website · checked Aug 31, 2026
San Antonio, TX, United States51-2009529
11
Metritech, INCIndirect evidence

“As an educational development, testing, and consulting company, it is MetriTech's mission to support education stakeholders in the development of human potential.”

Source: company website · checked Aug 31, 2026
Champaign, IL, United States501-1,000775
12
CASASPartial evidence

“CASAS is a nonprofit organization that provides assessments of basic skills for youth and adults and curricular tools to target instruction.”

Source: company website · checked Aug 31, 2026
San Diego, CA, United States11-507321
13
EmetricPartial evidence

“eMetric is a leading pure-play technology provider dedicated to advancing the assessment industry.”

Source: company website · checked Aug 31, 2026
San Antonio, TX, United States51-2006846
14
Tk20, Inc.Indirect evidence

“Based on more than a decade of experience, Tk20, Inc.”

Source: company website · checked Aug 31, 2026
Austin, TX, United States51-200509
15
Biddle Consulting GroupPartial evidence

“Our company offers 50+ years of expertise in skills- and merit-based testing solutions for human resources- TestGenius Skills Testing Software (SaaS)- Office Skills Testing…”

Source: company website · checked Aug 31, 2026
Folsom, CA, United States11-504830
16
Gmetrix LLCIndirect evidence

“Join students and professionals worldwide who report passing their certification after using GMetrix.”

Source: company website · checked Aug 31, 2026
Orem, UT, United States11-504025
17
NOCTIIndirect evidence

“NOCTI provides curricular and instructional improvement tools for secondary and post-secondary institutions.”

Source: company website · checked Aug 31, 2026
Big Rapids, MI, United States11-504017
18

“Cut Your Interview Time In Half AND Still Make A Great Hire!”

Source: company website · checked Aug 31, 2026
Indianapolis, IN, United States11-50396
19

“We are here to improve assessment throughout the world.”

Source: company website · checked Aug 31, 2026
Stillwater, MN, United States11-503719
20

“Strasz Assessment Systems creates custom assessment software and provides assessment system-related consulting services.”

Source: company website · checked Aug 31, 2026
Princeton, NJ, United States11-503321
21
RespondusIndirect evidence

“For the past 20 years Respondus has been reshaping how students are assessed.”

Source: company website · checked Aug 31, 2026
Redmond, WA, United States51-2002220
22
Prodigy LearningIndirect evidence

“Prodigy Learning is an award-winning global EdTech business, providing innovative online platforms that empower learners to develop and prove their skills.”

Source: company website · checked Aug 31, 2026
New York, NY, United States11-501910
23
Educational VistasIndirect evidence

“Educational Vistas Inc.(EVI), a distinguished K-12+ education corporation, is a NYSED Lead Scoring Entity and Woman-owned Business.”

Source: company website · checked Aug 31, 2026
Schenectady, NY, United States201-5001812
24
GradecamIndirect evidence

“Founded in 2002 by educators, GradeCam is a technology company focused on creating effective, efficient, and economical solutions for addressing the evolving needs in education…”

Source: company website · checked Aug 31, 2026
Livermore, CA, United States11-50159
25
ProlydianIndirect evidence

“Prolydian helps test publishers and administrators use technology to improve the testing experience from design to delivery."Why Prolydian?" you may ask.”

Source: company website · checked Aug 31, 2026
Tallahassee, FL, United States11-50159

Showing 25 of 157 assessment software developers based in the United States

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Assessment software developers based in the United States at a glance

As of Aug 31, 2026
11-50Median size (employees)
San FranciscoLargest hub · 6 HQs
2,964Contacts with mobile numbers
Aug 31, 2026Data refreshed

Companies by employee count

1-10
71
11-50
56
51-200
16
201-500
5
501-1,000
3
1,001-5,000
5

Assessment software developers by metro

MetroCompanies
Assessment software developers in San Francisco6
Assessment software developers in San Diego4
Assessment software developers in Cleveland3
Assessment software developers in Wilmington3
Assessment software developers in Princeton3
Assessment software developers in New York3
Assessment software developers in Los Angeles3
Assessment software developers in San Antonio3

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 assessment 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: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “assessment 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 assessment 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.
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, 2,710 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 August 31, 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

How many assessment software developers are there based in the United States?

There are 157 assessment software developers headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Prometric, headquartered in White Marsh, tops this list with the largest team on record.

Which city has the most assessment software developers?

San Francisco leads with 6 headquartered companies, followed by San Diego (4) and Cleveland (3).

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 2,710 verified decision-maker contacts tracked across these 157 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.