COA Exam Domains 2026: Complete Guide to All 2 Content Areas

The Two Sections at a Glance

Most certification exams slice their blueprint into a handful of weighted topic domains. The Certified Onshape Associate (COA) exam, delivered by Onshape (a PTC business) through the Onshape Learning Center and developed with SolidProfessor, is organized differently. Its two "domains" are really two sections that differ in format: a hands-on Modeling section and a multiple-choice Knowledge-based section.

That distinction matters for how you prepare. You are not memorizing a list of percentage-weighted topic buckets; you are preparing to build parametric CAD models in Onshape under time pressure and also to answer conceptual questions about how the platform works. If you are still orienting yourself to the credential, start with What Is COA Certification? and then return here for the section-level detail.

The current course listing describes a 3-hour window and a pass mark of 75% of available points. Official guidance from July 2026 and the live course listing supersede the older 45-question figure that appeared in the original launch announcement, so if you see 45 quoted on an older forum thread, treat it as historical.

How the Points Are Really Distributed

The most common misreading of this exam is treating the 66% and 34% figures as "topic domain weights." They are not. They represent the share of total points assigned to each scoring section. Modeling has 14 questions worth 66 points in total, while the Knowledge-based section has 34 questions worth 34 points.

Do the arithmetic and a striking pattern emerges: a Knowledge-based question is worth roughly one point, while a Modeling question is worth several points on average. Each hands-on task therefore moves your score far more than any single multiple-choice item.

For a closer look at the threshold itself, see COA Passing Score 2026: Exactly What You Need to Pass. Note that the general pass rate for this credential has not been verified in official sources, so be skeptical of any site quoting a precise figure; our COA pass rate analysis explains what can and cannot be said with confidence.

Domain 1: The Modeling Section

The Modeling section is the heart of the exam. It consists of 14 hands-on CAD questions carrying 66 of the 100 total points. Rather than selecting an answer, you build or modify geometry in Onshape and report results that verify your work, such as a measured volume, a mass property, or a dimension.

Why Accuracy Beats Speed Here

Because many modeling answers are derived from a finished part (for example, a calculated property of the final solid), a single misread dimension early in the sketch can invalidate the whole result. Candidates who rush often lose more points to transcription errors than to genuine skill gaps. Read every dimension, note the units, and confirm the origin and orientation before you extrude anything.

Modeling Skills You Must Execute Cleanly

Official preparation material for the associate-level exam centers on foundational Onshape workflow rather than advanced surfacing or simulation. The skills below are the ones most worth rehearsing until they are automatic.

Sketching and Constraints

• Creating fully defined sketches on the correct plane
• Applying dimensions and geometric constraints (coincident, tangent, equal, horizontal, vertical, concentric)
• Recognizing under-defined versus fully defined sketch state, and fixing it deliberately rather than by dragging geometry
• Using construction geometry and mirror to keep symmetrical parts clean

Part Features

• Extrude with the correct end condition and operation type (new, add, remove, intersect)
• Revolve profiles about a proper axis
• Fillet and chamfer applied to the right edges, in a sensible feature order
• Hole feature, shell, draft, and rib where a drawing calls for them
• Linear and circular patterns, plus mirror, to reproduce repeated features without re-sketching

Multi-Part and Reference Work

• Working with multiple parts in a single Part Studio and understanding how new features affect existing parts
• Using the feature list and rollback bar to edit upstream decisions
• Measuring and querying the model for mass properties and dimensions needed to answer questions

Domain 2: The Knowledge-Based Section

The Knowledge-based section contains 34 multiple-choice questions worth 34 points. Where Modeling asks you to do, this section asks whether you understand Onshape's concepts, terminology, and design philosophy.

Because there are 34 questions and only 34 points, you have room to miss a few without catastrophe, but misses compound against a 75% threshold. Think of this section as the place to bank easy points quickly so you preserve time for the more demanding hands-on work.

Knowledge Topics Worth Drilling

Onshape is a fully cloud-based CAD system, so a meaningful share of the conceptual questions revolve around what makes it different from file-based desktop tools. Expect themes such as:

• Documents and structure: how Documents contain Part Studios, Assemblies, Drawings, and imported files as tabs
• Version control: versions, branches, and merges, and how they replace traditional file copies and "save as" habits
• History and the feature list: how editing an earlier feature regenerates downstream geometry
• Collaboration and permissions: sharing documents, access levels, and real-time co-editing
• Part Studio versus Assembly: what belongs in each, and the purpose of mates and mate connectors
• Drawings: creating views, dimensions, and annotations from existing models
• Design intent terminology: parametric modeling, sketch constraints, feature order, and why they matter

If you want a condensed refresher of definitions you can scan right before test day, the COA cheat sheet collects the must-know facts on a single page.

Registration, Fees and Attempt Mechanics

The exam is accessed through the Onshape Learning Center, where the course listing for Certified Onshape Associate describes the current format. Each attempt costs $50. Conditional vouchers and bulk discounts exist, which can matter for instructors, schools, or employers enrolling many learners at once; the specific eligibility terms for those offers are set by Onshape, so confirm them on the official listing. A full breakdown lives in our COA certification cost guide.

Two items are worth flagging honestly. First, relevant hands-on experience is recommended but is not a verified formal admission requirement; see COA requirements for how to think about readiness. Second, definitive expiration or renewal terms and formal proctoring specifications were not verified in the sources used for this guide, so check the Learning Center page for current policy rather than assuming. For timing questions, our COA exam dates article covers scheduling considerations.

Sequencing Your Prep Around the Two Sections

Because Modeling is worth 66 points and demands practiced muscle memory, it should consume the majority of your preparation hours. The knowledge section is more compressible. A sensible plan front-loads hands-on repetition and saves conceptual review for later, when vocabulary can be refreshed quickly.

Mix in timed knowledge drills using our COA practice tests so the multiple-choice pace becomes second nature, and reserve the final days for full-length rehearsal. If you want a sense of how demanding candidates typically find the exam, read How Hard Is the COA Exam? before deciding how much runway to give yourself.

Who Benefits From This Credential

The Certified Onshape Associate credential targets people who use Onshape for mechanical design: students building a portfolio, early-career designers and drafters, and professionals whose teams are standardizing on cloud CAD. Official Onshape content aimed at students emphasizes that the certificate and badge offer a verifiable way to demonstrate hands-on skill to employers and educators.

It is best understood as a proof-of-skill credential for entry-level and early-career roles rather than a guarantee of any particular salary. Roles that value Onshape fluency include design engineering, product development, mechanical drafting, and manufacturing support. For market context, see COA jobs, and to weigh the investment, read Is the COA Certification Worth It?. Earnings depend heavily on role, region, and experience, so our COA salary guide treats compensation qualitatively rather than promising specific numbers.

Common Traps in Each Section

Modeling Traps

• Misreading units or origin placement, which silently skews every downstream measurement
• Leaving sketches under-defined and then watching geometry shift when later features regenerate
• Applying fillets too early, which can break later features or make constraints harder to place
• Spending too long on one hard task and starving the remaining modeling questions of time

Knowledge Section Traps

• Assuming desktop-CAD habits apply, such as thinking in terms of saved files rather than versions and branches
• Guessing on terminology instead of recalling Onshape's own names for tools and structures
• Over-investing here relative to its 34-point value, at the expense of hands-on practice

For a broader view of what to expect on test day, including how the sections interlock, revisit our COA exam domains overview alongside the COA training resources available to build your skills.

Frequently Asked Questions