The Microsoft Learn modules for the GitHub Copilot GH-300 certification are well structured. They are just not enough. I worked that out about forty minutes into the exam.
I passed. It was not particularly hard, but it was hard in ways I did not expect…
What the GH-300 actually tests
The official study guide maps the domains. What it undersells is the depth.
Plan differences (Individual, Business, Enterprise) come up a lot, at a level that goes beyond headline features. Know the actual distinctions: data retention, IP indemnity, audit log access, REST API subscription management.
Prompt engineering is practical, not theoretical. Responsible AI is scenario-based, not definitional. Agent Mode, Edit Mode, and MCP are in scope, the exam changed materially in January 2026, so anything older than that is incomplete. Content exclusions and privacy controls at the organisation level caught people out; study those carefully.
Know both billing models: the exam may not be updated yet
GitHub Copilot’s billing model is changing significantly on 1 June 2026, and the exam content has not caught up. When I sat it, the questions still reflected the old premium request unit (PRU) model. If you sit it before the exam is updated, expect the same.
Study both. Here is what you need to know about each.
Old model (PRU-based, what the exam currently tests): each plan includes a monthly PRU allowance. Each model has a multiplier that burns through it at different rates. Exhaust your PRUs and Copilot falls back to a lower-cost included model. Overages are $0.04 per premium request. Code completions do not consume PRUs.
New model (AI Credits, from 1 June 2026): PRUs are replaced by GitHub AI Credits based on token consumption. Each plan’s subscription price equals its monthly credit allowance. No more fallback: when credits run out, admin budget controls take over. Plan prices are unchanged.
Annual subscribers stay on PRU billing until their plan expires. Monthly subscribers migrate automatically on 1 June. Know which applies to each tier.
Free resources worth your time for GH-300 exam prep
I did the research before sitting. Here is what I found useful, roughly in order.
The official study guide is the right starting point, but treat it as a map, not the territory. The January 2026 revision added Agent Mode, Sub-Agents, MCP workflows, Spaces, and Spark. Make sure you are on the current version before you study anything else.
GitHub Learn’s official certification page has a free practice exam. Take it early, not at the end. Use it to surface your gaps, not to confirm you are ready.
The actual GitHub docs at docs.github.com. Read the technical documentation on privacy, content exclusions, and enterprise controls, the documentation pages, not the blog posts or feature announcements. The exam draws on the docs.
timothywarner-org on GitHub is actively maintained, updated to April 2026. It includes a quick-reference cheat sheet, practice prompt files, and a Copilot study agent you can run inside VS Code. Worth cloning.
The GitHub Community certification prep thread has sample questions and answers in the discussion itself. Useful for checking your understanding of specific concepts.
freeCodeCamp’s GitHub Foundations course (Andrew Brown, on YouTube) is not GH-300 specific but covers the GitHub fundamentals well if yours are rusty. Nine hours, free.
Is the GH-300 worth doing if you are already a senior practitioner?
Is the GH-300 worth doing?
Probably yes, and not for the reason you might assume.
If you already use Copilot daily, the developer experience side of the exam will feel straightforward. You likely know that already. What the exam forces you to do is go deep on governance, privacy, and enterprise controls.
After sitting it, I have a clearer picture of what I would actually configure at an organisation level, what each plan tier enables and restricts, and where the data handling boundaries genuinely sit. That is useful regardless of the badge.
The exam costs around £65 in the UK, takes two hours, and runs online through Pearson VUE. Retakes are available after 24 hours if needed.
If Copilot is being evaluated or rolled out in your organisation, this gives you defensible knowledge of what it can and cannot do. That is worth more than the LinkedIn notification.