What Cambium Assessment does

Cambium Assessment, Inc. is a U.S.-based K-12 educational assessment company that operates as a subsidiary of Cambium Learning Group, a diversified education technology conglomerate. Founded in 1999 and headquartered at 4200 Wilson Blvd., Ste. 610 in Arlington, Virginia, the company employs between 251 and 500 people and delivers summative, interim, and formative assessments across English language arts, mathematics, science, social studies, and end-of-course subjects including Algebra and Chemistry. During the 2024-2025 academic year the platform administered 131.7 million online tests, supported 1.5 million simultaneous testers, evaluated 15.1 million individual students, and used a proprietary AI scoring engine to scan 106.5 million student responses.

The product portfolio is structured as a platform-plus-modules architecture. The core delivers large-scale summative assessments to state education departments, with sub-brand modules including ClearSight for district-level interim assessments, ThroughYear for interim and formative classroom tests, K-2 assessments for early childhood, Write on with Cambi! for AI-assisted formative writing, the Family Portal (which served 30 million family members and generated 366 million interactions in 2024-2025), and the ClearFrame API for integration into third-party educational systems. The technology stack combines a high-scale online testing platform with AI-powered response scoring, machine learning capabilities, and a psychometric engine grounded in sampling and statistical expertise, supported by an active research program publishing through the National Council on Measurement in Education.

The revenue model is anchored in multi-year subscription-style contracts with state education departments (e.g., Indiana, Arkansas, and Texas TSNAP member districts), augmented by district-level ClearSight subscriptions, formative assessment product subscriptions, and direct Family Portal access for families and students. Go-to-market is executed through enterprise field sales at the state and district level, complemented by self-serve consumer access through the Family Portal and API-based distribution via ClearFrame. Pricing is procured through state and district contracts rather than publicly disclosed tiers.

Name

Cambium Assessment

Legal name

Cambium Assessment, Inc.

Website

https://cambiumassessment.com

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

251–500 employees

Short description

Cambium Assessment, Inc. is a U.S. K-12 educational assessment subsidiary of Cambium Learning Group that delivers summative, interim, and formative assessments at scale to state education departments, school districts, and families.

Ownership category

akta.pro rank

Product category

Educational Assessment Software

NAICS

Educational Support Services (611710), Educational Support Services (61171)

SIC

Services-Educational Services (8200), Services-Prepackaged Software (7372)

akta.pro primary industry

Assessment, Testing & Analytics Platforms (Formative/Summative) (EDAJAMAC)

akta.pro secondary industries

Test Item Banks, Question Authoring & Assessment Design Tools (EDAFADAC), Classroom Assessment & Grading (Formative/Summative) (EDAJAFAC)

Keywords

• K-12 online testing
• Educational assessment software
• Psychometric testing services
• AI-powered scoring
• State assessment programs

Headquarters

HQ city

Washington

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. State Assessment Contracts: Contractual agreements with state education departments for large-scale summative testing programs, including test development, delivery, scoring, and reporting
2. District Assessment Subscriptions: ClearSight district-level subscriptions for research-based interim assessments providing instructional decision data
3. Formative Assessment Products: Products like Write on with Cambi! for formative writing instruction and practice tests

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

Cambium Assessment delivers a K-12 online assessment platform offering summative, interim, and formative tests across ELA, mathematics, science, social studies, and end-of-course subjects, paired with an AI-powered scoring engine and psychometric services for state education departments and school districts. Supporting products include ClearSight (district interim assessments), Write on with Cambi! (formative writing), K-2 assessments, the Family Portal (family/student/teacher engagement), and the ClearFrame API (assessment data integration with third-party systems).

Product overview

Cambium Assessment operates as a platform-plus-modules architecture offering a comprehensive K-12 assessment ecosystem. The core platform delivers summative, interim, and formative assessments across subjects including ELA, mathematics, science, and social studies. Supporting modules include ClearSight for Districts (research-based assessment data), Write on with Cambi! (formative writing), K-2 Assessments (early childhood testing), the Family Portal (family engagement), and ClearFrame API (third-party system integration). The platform processes over 131.7 million online tests annually serving 15.1 million students with AI-powered response scanning capabilities.

Differentiator

Problem solved

Functional benefit

Brands

• ClearSight: Research-based assessments for districts that provide data for instructional decisions impacting student access
• Write on with Cambi!
• ClearFrame API
• Family Portal
• ThroughYear

Products and services

• Summative, Interim, and Formative K-12 Assessments Comprehensive K-12 online assessment suite (summative, interim, formative) across ELA, mathematics, science, social studies, and end-of-course subjects including Algebra and Chemistry, administered at scale for U.S. state education departments. Each program covers assessment design, delivery, scoring, and reporting; during the 2024–2025 academic year the platform administered 131.7 million online tests and scored 106.5 million student responses with the company's AI engine.
• ClearSight for Districts Research-based interim assessment platform for K-12 school districts that delivers data to drive instructional decisions directly impacting student access and outcomes. ClearSight operates as a distinct offering with its own sales motion, target buyer (mid-market districts), and value proposition tied to instructional visibility.
• Write on with Cambi! Formative writing product designed to help K-12 students improve their writing skills through AI-assisted guidance and feedback. Marketed as a standalone revenue-generating offering separate from the core summative/interim/formative assessment programs.
• K-2 Assessments Early childhood assessment suite including formative/diagnostic, comprehensive, and screening assessments for kindergarten, 1st grade, and 2nd grade, applying the same technology and psychometric expertise that powers the large-scale summative assessments.
• ClearFrame API Application programming interface that distributes actionable assessment data from Cambium assessments to third-party educational systems for enhanced student instruction and outcomes; positioned as an OEM/embedded channel for system integrators.
• Family Portal Self-service digital portal that delivers assessment results, practice tests, and engagement tools directly to families, students, and teachers, extending the assessment platform beyond schools and districts to homes.

Quantifiable outcome

• 131.7M online tests administered in 2024-2025 academic year
• +3 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature5 records

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• ACT: Assessment organization providing ACT and statewide K-12 assessment programs (e.g., ACT Aspire). Directly competes for state-level summative contracts while operating a broader testing portfolio.
• PowerSchool: Dominant K-12 student information system vendor with adjacent assessment/analytics offerings. Relevant peer due to overlapping district buyers and potential to bundle or substitute for assessment data delivery.
• College Board: Large non-profit assessment organization with K-12-adjacent offerings (e.g., SAT School Day, AP). Comparable in assessment scale and state relationships but broader in scope beyond K-12 classroom testing.
• Pearson: Global education incumbent with a sizable K-12 assessment portfolio alongside broader publishing and services. Directly competes with Cambium for state summative contracts and shares a multi-product, enterprise-sales motion.

Direct peers

• ETS (Educational Testing Service): Non-profit assessment organization operating large-scale K-12 summative testing programs for multiple states. Closely comparable in psychometric rigor, state-level contract structure, and through-year/interim capabilities.
• Curriculum Associates (iReady): Provider of iReady Diagnostic and instruction, a leading K-12 adaptive assessment and personalized learning platform. A direct rival for district assessment budgets and the emerging AI-driven formative space.
• Renaissance Learning: K-12 EdTech company offering formative/interim assessment (Star) alongside practice and reading products. Overlaps with Cambium in district-level interim assessment procurement and AI-driven scoring.
• NWEA: Non-profit provider of MAP Growth interim/adaptive assessments widely used by K-12 districts. Competes most directly with Cambium's ClearSight and ThroughYear offerings on the district-buy side.
• Data Recognition Corporation (DRC): Long-standing vendor of state K-12 summative assessments and large-scale testing programs. Closely comparable in state-contract revenue model, psychometric expertise, and operational scale.

Emerging players

• Illuminate Education: K-12 data and assessment platform focused on formative/interim assessments and district data dashboards. Comparable as a district-tier competitor with overlapping through-year and reporting functionality.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/cambium-assessment

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Cambium Assessment