Today I passed the GitHub Copilot GH-300 exam and decided to write down my impressions right away while they are still fresh. First of all, this article is not so much a “how to pass” guide as a place where people who are currently preparing for the exam can ask questions to someone who literally took it today. If anything from my experience helps you prepare better, or at least understand what to expect, then this article has already served its purpose.
The gap between preparation materials and the actual exam questions
The first thing that genuinely surprised me was how different the information in the recommended preparation materials can be from what you actually see on the exam. A few times, my completely honest reaction was: “Where did this even come from?” Subjectively, I managed to answer some of those questions not because I had memorized the materials well, but because by the time I took the exam I had already been using Copilot quite intensively in real-world development. Sometimes practical experience helped, sometimes it was a general understanding of engineering processes, and sometimes it was simply common sense.
So I would not recommend treating the official materials as a complete map of the exam. They are useful and they provide the basic structure of the topics, but they are not enough to make you confident about every question. If you already use Copilot at work, that is a serious advantage, because part of the exam tests not only whether you know the wording from the documentation, but also whether you understand how the product behaves in common scenarios.
Copilot = Microsoft
Another thing worth keeping in mind: Copilot is GitHub, GitHub is Microsoft, and Microsoft also means Windows and PowerShell. If, like many developers, you have spent years working on macOS and barely touching the Windows ecosystem, some questions may come as an unpleasant surprise. For example, you may need at least a basic understanding of how something is installed or configured through PowerShell. I barely looked at things like that during my preparation because I relied too heavily on the recommended resources and hardly read any additional documentation. If I were preparing again, I would definitely close that gap.
Do questions from the preparation materials appear on the exam?
A separate story is my attempt to “outsmart the system.” During preparation, I collected all the questions I came across in the learning modules and the practice exam, put them into Anki, and simply memorized them. I thought it would be a decent safety net: even if the questions were not repeated word for word, at least I would have the relevant facts firmly memorized. In practice, my subjective impression is that I did not see a single question repeated exactly on the real exam, and only one or two vaguely resembled something I had learned this way. So I would not recommend memorizing the correct answers; it is much more useful to use those questions as a way to check whether you actually understand the topic.
Question formats
Another mistake in my expectations about the GH-300 was assuming that the exam would mostly follow the classic format: one question, four answers, one correct choice. In reality, there are more formats. Some questions require you to choose two correct answers out of four or three out of five, some ask you to match items between two columns, and some require you to arrange several steps in the correct order. Personally, I found the last type to be one of the trickiest because it is no longer enough to “roughly remember the correct answer” — you need to understand the process itself.
Statistically, you can feel the difference too. In a standard multiple-choice question with four options, you at least have a 25% chance of guessing correctly if you know absolutely nothing. But when you need to choose several items from a set and then put them in the correct order, the number of possible combinations grows very quickly. That is why I would pay particular attention to how GitHub Copilot handles basic workflows: authentication, starting a new session, resuming a previous one, working with context, and common interaction scenarios. It is important not only to know that a feature exists, but to understand what happens step by step.
A final gift :)
And finally, here is a small semi-joking life hack that I came up with for myself while preparing. Use this entirely at your own risk.
If you are looking at a question where you have absolutely no idea which answer is correct and you are going to guess anyway, take a closer look at the longest option. In the practice materials, I repeatedly noticed a pattern: the correct answer is often written in a complete, careful way with all the necessary qualifications, while the incorrect options sometimes look as if, after writing the correct one, the author got a little tired of coming up with alternatives.
If you don’t know which answer to choose, choose the longest one.
I do not know how consistently this works on the real exam, and I definitely would not recommend using it as a substitute for knowledge. But if you are already in a situation where you have to guess anyway, at least you will have some kind of heuristic. I saw this pattern often enough in the practice questions to notice it.
If I had to start preparing again today, I would spend less time memorizing ready-made answers and more time on three things:
- actually working with Copilot
- reading additional documentation
- understanding the product workflow.
The learning path and the demo exam are useful, but I would treat them as a map of the topics rather than a simulation of the actual exam.
So,
if you are preparing for the GH-300 right now, leave your questions in the comments.
While my impressions are still as fresh as possible, I will try to answer everything I can.
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