Company lists · Data refreshed September 2026

Top 25 Assessment and testing companies based in the United States

Name: Assessment and testing companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 313 companies tracked

RevenueBase identified 313 assessment and testing companies headquartered in the United States as of September 2026 and tracks 22,191 professional contacts across them, including 5,313 with verified work emails. Austin is the largest hub.

This list covers assessment and testing companies 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

313Companies

22,191Contacts tracked

5,313Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest assessment and testing companies based in the United States

Ranked by team size

Top 25 of 313 assessment and testing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to assessment and testing companies: 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	ETS	Indirect evidence	Princeton, NJ, United StatesHQ checked Sep 19, 2026	1,001-5,000	5,371 contacts →
	Indirect evidence “ETS is a global education and talent solutions organization, enabling lifelong learners to be future ready.” Source: RevenueBase Database · checked Sep 19, 2026
2	ACT	Indirect evidence	Iowa City, IA, United StatesHQ checked Sep 19, 2026	n/a	3,357 contacts →
	Indirect evidence “ACT is transforming college and career readiness pathways so that everyone can discover and fulfill their potential.” Source: RevenueBase Database · checked Sep 19, 2026
3	Prometric	Indirect evidence	White Marsh, MD, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,105 contacts →
	Indirect evidence “Prometric is a global leader in credentialing and skills development.” Source: RevenueBase Database · checked Sep 19, 2026
4	Data Recognition Corporation	Indirect evidence	Maple Grove, MN, United StatesHQ checked Sep 19, 2026	501-1,000	1,687 contacts →
	Indirect evidence “DRC was founded in 1978 as a service firm specializing in test and survey administration and processing.” Source: RevenueBase Database · checked Sep 19, 2026
5	Gaming Laboratories International, LLC	Indirect evidence	Lakewood, NJ, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,093 contacts →
	Indirect evidence “Illuminate Your Path with a Wonderful Career at Visit gaminglabs.com/careers for great career opportunities!” Source: RevenueBase Database · checked Sep 19, 2026
6	PSI Services LLC	Partial evidence	Olathe, KS, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,022 contacts →
	Partial evidence “PSI has over 70 years of experience providing worldwide testing solutions to corporations, federal and state government agencies, professional associations, certifying bodies and…” Source: RevenueBase Database · checked Sep 19, 2026
7	Cambium Assessment	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	501-1,000	526 contacts →
	Partial evidence “As the leading experts in K-12 education assessment, Cambium Assessment delivers innovative, reliable, and actionable technologies.” Source: RevenueBase Database · checked Sep 19, 2026
8	NWEA	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	501-1,000	477 contacts →
	Partial evidence “NWEA is a research-based, not-for-profit organization that supports students and educators worldwide by creating assessment solutions that precisely measure growth and…” Source: RevenueBase Database · checked Sep 19, 2026
9	examroom.ai	Strong evidence	Lake Mary, FL, United StatesHQ checked Sep 19, 2026	201-500	405 contacts →
	Strong evidence “ExamRoom.AI provides an end-to-end digital testing experience, integrating exam creation, delivery, AI-powered proctoring, identity verification, analytics, and post-assessment…” Source: RevenueBase Database · checked Sep 19, 2026
10	Meazure Learning	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	398 contacts →
	Indirect evidence “Meazure Learning provides secure, reliable, and convenient test development, administration, and delivery solutions for academic and professional credentialing programs.” Source: RevenueBase Database · checked Sep 19, 2026
11	Scantron	Partial evidence	Eagan, MN, United StatesHQ checked Sep 19, 2026	51-200	314 contacts →
	Partial evidence “Legacy strong, future focused.Scantron delivers technology-enabled assessment, analytics, and data services that empower organizations across education, business, and government…” Source: RevenueBase Database · checked Sep 19, 2026
12	Talview	Indirect evidence	San Mateo, CA, United StatesHQ checked Sep 19, 2026	51-200	299 contacts →
	Indirect evidence “Talview is the trust infrastructure for high-stakes decisions in the AI era.” Source: RevenueBase Database · checked Sep 19, 2026
13	Measured Progress	Partial evidence	Dover, NH, United StatesHQ checked Sep 19, 2026	201-500	269 contacts →
	Partial evidence “Dover, N.H-based Measured Progress, a national leader in assessment solutions, is merging with metro Atlanta-based AdvancED, the global leader in continuous improvement.” Source: RevenueBase Database · checked Sep 19, 2026
14	Kryterion, INC	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 19, 2026	201-500	229 contacts →
	Indirect evidence “At Kryterion, we know a thing or two about test delivery.” Source: RevenueBase Database · checked Sep 19, 2026
15	Uexams	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 19, 2026	5,001-10,000	203 contacts →
	Indirect evidence “uExamS is the leading global provider of test & training support solutions.” Source: RevenueBase Database · checked Sep 19, 2026
16	Questar Assessment INC	Indirect evidence	Apple Valley, MN, United StatesHQ checked Sep 19, 2026	1,001-5,000	173 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
17	Par, INC	Indirect evidence	Lutz, FL, United StatesHQ checked Sep 19, 2026	51-200	139 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
18	WPS	Partial evidence	Torrance, CA, United StatesHQ checked Sep 19, 2026	51-200	134 contacts →
	Partial evidence “A family business since 1948, WPS publishes psychological and educational assessments that practitioners trust.” Source: RevenueBase Database · checked Sep 19, 2026
19	Riverside Publishing	Partial evidence	Rolling Meadows, IL, United StatesHQ checked Sep 19, 2026	201-500	114 contacts →
	Partial 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: RevenueBase Database · checked Sep 19, 2026
20	Eskill	Partial evidence	San Antonio, TX, United StatesHQ checked Sep 19, 2026	51-200	94 contacts →
	Partial 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: RevenueBase Database · checked Sep 19, 2026
21	Michigan Language Assessment	Partial evidence	Ann Arbor, MI, United StatesHQ checked Sep 19, 2026	11-50	80 contacts →
	Partial evidence “Michigan Language Assessment offers a comprehensive and flexible set of the highest-quality products and services to help educational, governmental, and private-sector…” Source: RevenueBase Database · checked Sep 19, 2026
22	Vantage Learning	Indirect evidence	New Hope, PA, United StatesHQ checked Sep 19, 2026	51-200	79 contacts →
	Indirect evidence “About Vantage Learning Since 1990, Vantage Learning has provided educators with sophisticated knowledge and immediate feedback solutions to enhance student learning.” Source: RevenueBase Database · checked Sep 19, 2026
23	Metritech, INC	Partial evidence	Champaign, IL, United StatesHQ checked Sep 19, 2026	501-1,000	79 contacts →
	Partial 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: RevenueBase Database · checked Sep 19, 2026
24	CASAS	Partial evidence	San Diego, CA, United StatesHQ checked Sep 19, 2026	11-50	73 contacts →
	Partial evidence “CASAS is a nonprofit organization that provides assessments of basic skills for youth and adults and curricular tools to target instruction.” Source: RevenueBase Database · checked Sep 19, 2026
25	TRP Laboratories	Partial evidence	Troy, MI, United StatesHQ checked Sep 19, 2026	51-200	70 contacts →
	Partial evidence “TRP Laboratories provides standard and custom testing services across the United States.” Source: RevenueBase Database · checked Sep 19, 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: assessment and testing companies. 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 assessment and testing companies.
Partial evidence: Its own public description names part of assessment and testing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name assessment and testing companies. 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 313 assessment and testing companies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 5,313 reachable decision-makers.

Free signup · no credit card

View the full list →

Assessment and testing companies based in the United States at a glance

As of Sep 19, 2026

23.9%Verified-email coverage

70.9Average contacts per company

1-10Median size (employees)

4.2%Largest-city concentration · Austin

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

169

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 313 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 assessment and testing companies, 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 “assessment and testing companies”. 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 assessment and testing companies), 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 assessment and testing companies, 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, 5,313 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.

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 assessment and testing companies, 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 assessment and testing companies are there based in the United States?

RevenueBase identified 313 assessment and testing companies 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?

ETS, headquartered in Princeton, tops this list with the largest team on record.

Which city has the most assessment and testing companies?

Austin leads with 13 headquartered companies, followed by San Francisco (7) and Princeton (6).

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 5,313 verified decision-maker contacts tracked across these 313 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.

Ready to reach these companies? Verified emails and direct dials for all 313 assessment and testing companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Assessment and testing companies by geography

Browse the directory

Browse: Companies home · All United States lists · All Assessment and testing companies lists · New lists

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.