GH-300 Exam Domains 2026: Complete Guide to All 6 Content Areas

Domain Overview: How the Six Areas Break Down

GitHub Copilot Certification (GH-300) is organized into six content domains, each with a published weight range that tells you how many questions to expect from that area during your 100-minute session. GitHub maintains the credential; Microsoft develops and publishes the exam on Microsoft Learn, and Pearson VUE handles scheduling and proctoring at a test center or via online remote proctoring. Understanding the domain weights isn't just trivia - it's the single most useful input for deciding where to spend your limited study hours before test day.

The six domains are:

• Use GitHub Copilot responsibly (15-20%)
• Use GitHub Copilot features (25-30%)
• Understand GitHub Copilot data and architecture (10-15%)
• Apply prompt engineering and context crafting (10-15%)
• Improve developer productivity with GitHub Copilot (10-15%)
• Configure privacy, content exclusions, and safeguards (10-15%)

Notice that no domain falls below 10%, which means an exam candidate cannot pass by memorizing one heavy topic and skimming the rest. If you want a broader look at how difficult this balance makes the exam in practice, the GH-300 difficulty guide breaks down where most candidates lose points.

Domain 1: Use GitHub Copilot Responsibly (15-20%)

This domain tests whether a candidate understands the practical guardrails around AI-assisted coding - not just how to generate code, but how to verify, attribute, and govern it. Expect scenario questions where you have to decide the appropriate action when Copilot suggests code that may carry licensing, security, or quality risk.

This is one of the domains people underestimate because it feels "soft" compared to feature mechanics. Treat it seriously - at 15-20% it's weighted close to several technical domains combined.

Domain 2: Use GitHub Copilot Features (25-30%)

This is the anchor domain of GH-300, and at 25-30% it will generate more questions than any other single area. It covers the practical surface area of Copilot itself: how it's enabled, how suggestions and chat behave, and how the more advanced tooling fits into real developer workflows.

Most questions in this domain cover generally available (GA) features, though commonly used Preview features can also appear - so don't assume "it's still in preview" means it's out of scope. Because this domain touches so many discrete features, candidates often find it useful to build a checklist and test each item hands-on inside a real GitHub organization before exam day. The GH-300 study guide walks through a hands-on approach to covering this domain efficiently.

Domain 3: Understand GitHub Copilot Data and Architecture (10-15%)

This domain steps back from feature usage to ask how Copilot actually works under the hood: what data it draws on, how suggestions are generated, and how the underlying architecture affects behavior and trust. Expect conceptual questions rather than click-through workflow questions here.

Because this domain is more conceptual, flashcard-style review works reasonably well - pair it with the terminology reference in the GH-300 cheat sheet for quick recall before test day.

Domain 4: Apply Prompt Engineering and Context Crafting (10-15%)

This domain evaluates whether a candidate can get better output from Copilot by writing better prompts and supplying the right context - a skill distinct from simply knowing which button to click.

Expect scenario-based items here: you'll be shown a prompt and asked to identify why it produced poor output, or asked to select the prompt most likely to produce a correct result given a stated goal.

Domain 5: Improve Developer Productivity With GitHub Copilot (10-15%)

This domain is about outcomes - how Copilot changes day-to-day developer workflows, from writing code to reviewing pull requests to debugging. It ties feature knowledge from Domain 2 to measurable workflow improvements.

Candidates with real day-to-day experience using Copilot for productivity, quality, and security - part of the intended audience profile for this Intermediate-level certification - tend to find this domain intuitive, since it mirrors actual usage rather than abstract theory.

Domain 6: Configure Privacy, Content Exclusions, and Safeguards (10-15%)

The final domain covers the administrative and security controls that govern how Copilot behaves within an organization - critical knowledge for anyone responsible for rolling Copilot out to a team.

This domain overlaps conceptually with Domain 1's responsible-use principles but focuses on the concrete settings an administrator configures rather than the judgment a developer applies.

Turning Domain Weights Into a Study Plan

With six domains ranging from 10% to 30%, a simple way to allocate study time is proportional to weight, while still budgeting minimum time for every domain since none falls below 10%.

If you'd rather see a full week-by-week plan built around this exact weighting, the GH-300 study guide expands on this timeline in more detail, and you can gauge your baseline readiness using practice questions on our GH-300 practice test platform.

Question Format and What to Expect on Screen

GH-300 is a proctored exam with a 100-minute testing time, and it may include interactive components alongside standard multiple-choice, multiple-response, and scenario-based items. A scaled score of 700 or greater is required to pass - a threshold explained in more depth in the GH-300 passing score guide.

The exam is offered in English, Spanish, Portuguese (Brazil), Korean, and Japanese, and candidates testing in a non-preferred language can request an additional 30 minutes. Registration costs $99 USD, though the exact amount is set by the country or region where the exam is proctored - see the GH-300 certification cost breakdown for a fuller picture, including Exam Replay bundles sold by Microsoft and the single-use voucher available to GitHub Student Developer Pack holders (valid for either GH-300 or GH-900).

If your first attempt doesn't succeed, you can retake after 24 hours, with progressively longer waits for later retakes. The certification also expires annually and renews at no cost through an online assessment on Microsoft Learn - worth planning around if you're timing certification against a job search or internal promotion cycle covered in the GH-300 jobs overview.

Frequently Asked Questions