The supervisor's report and the opponent's report are two independent written assessments of your thesis. They are produced after you submit the work and they form the basis of your defense. The supervisor's report is written by your thesis supervisor and mainly evaluates how the collaboration went, your independence and whether you met the brief. The opponent's report (in some countries called the examiner's report) is written by an opponent, usually a different expert, who critically assesses the content, methods, results and formal side of the work. Both reports contain a written evaluation, a proposed grade and questions you are expected to answer at the defense. You usually receive the reports a few days before the defense, so you have time to prepare specific answers.
What the supervisor's report is
The supervisor's report is the assessment written by the person who supervised your thesis. In some systems you may also see it called the advisor's report, but it means the same thing, only different institutions use different terms. Your supervisor guided you through the whole process, so they evaluate not just the final text but also the path that led to it.
In the report, the supervisor mainly comments on how the collaboration went. They care whether you worked independently, whether you responded to their feedback, how you met deadlines and to what extent you fulfilled the brief. Because they know you, this report tends to be more personal and often more lenient than the opponent's. That does not make it a mere formality. A supervisor can also criticize the work and ask questions.
What the opponent's report is
The opponent's report is an independent critical assessment of your work by an opponent who sees it for the first time as a finished whole. The opponent is usually not the person who supervised you. They are another expert in the field who reviews the work at arm's length and without knowing what happened behind the scenes.
That is exactly why the opponent's report tends to be more critical. The opponent's job is to find weak spots, challenge claims that are not sufficiently supported and check whether the work holds up to an outside view. It almost always includes specific questions for discussion that you are expected to answer at the defense. This is not an attack on you, it is a standard part of the process. A critical opponent's report does not mean you failed, nor that you will not defend the work.
Who writes the reports and when the student receives them
The reports are written by two different people, and the student usually receives them together, shortly before the defense. Without both reports, you are usually not even admitted to the defense.
- The supervisor's report is written by the supervisor who was assigned to you or whom you chose at the start.
- The opponent's report is written by an opponent appointed by the department or its head, usually without your input.
- When you receive them: the reports are typically available a few days before the defense, often through the faculty information system. The exact release time differs by institution.
This time gap is what matters. Even when it is only a matter of days, it is enough for you to study the reports carefully and prepare. Anyone who opens the reports on the morning of the defense gives up the easiest points they could earn.
What a report contains
Although the supervisor's and the opponent's report differ in emphasis, their structure tends to be similar. Most faculties use a form with the same assessment areas. A report usually contains these parts:
- Assessment of the aim. Whether the aim was clearly defined and to what extent it was met. This is one of the most important areas, because an unmet aim is a serious problem.
- Assessment of structure and logical build. Whether the work is clearly organized, whether the chapters follow on from each other and whether it matches the conventions of the field.
- Assessment of methods. Whether the chosen methods were appropriate, correctly applied and described in enough detail. This is where the opponent asks most often.
- Assessment of original contribution. What new the work brought and how clearly borrowed material is separated from your own. A master's thesis is expected to make a stronger contribution than a bachelor's.
- Assessment of the formal side. Layout, language, grammar, accuracy of citations, quality of charts and tables, adherence to the required citation style.
- Proposed grade. The assessor proposes a grade, but the final evaluation of the defense is decided by the committee, not the report itself.
- Questions for discussion. One or more specific questions you are expected to answer at the defense. This is where it pays to be especially attentive.
The proposed grade in a report is indicative. The defense itself and the overall result are decided by the examination committee in a closed session, where they also weigh your presentation and your answers. We have described how the whole defense unfolds step by step in our article on preparing for and getting through the thesis defense.
How the two reports differ
The main difference lies in the point of view. The supervisor evaluates the process and knows the backstory, the opponent evaluates the result at a distance. This produces differences in tone and content too.
| Aspect | Supervisor's report | Opponent's report |
|---|---|---|
| Who writes it | the supervisor | an opponent, usually a different expert |
| Knows the backstory | yes, guided you through the process | no, sees the work as a finished whole |
| What it focuses on | course of the collaboration, independence, meeting the brief | critical analysis of content, methods, results, form |
| Tone | usually more personal, often more lenient | usually more critical and matter-of-fact |
| Questions for discussion | sometimes | almost always |
The table is a generalization. In practice you will meet a strict supervisor and an accommodating opponent too. Take the difference not as a guarantee but as a guide to what to expect from each report.
How to read and understand the questions and comments
Do not read the reports once and superficially. Go through them sentence by sentence and separate two types of content: questions you must answer, and comments that describe a shortcoming without a direct question.
The questions for discussion are obvious. Write them out separately and prepare an answer for each. Comments are trickier, because they do not always end with a question mark, yet the committee can still ask about them. When an opponent writes that "the sample is too small to generalize", it does not sound like a question, but in reality it is inviting you to defend your approach.
As you read, ask yourself three questions about each objection:
- Is the opponent right? Be honest with yourself. Some objections are justified.
- How did this objection arise? Was it a conscious choice, a compromise due to time, or a genuine mistake?
- What would I say to this out loud? Frame an answer in two or three sentences, not a paragraph.
If you do not understand a particular wording, do not pass over it in silence. It is better to think in advance about what the assessor meant than to be caught off guard at the defense.
How to prepare answers to the report questions for the defense
The report questions are the only questions you know in advance. That is a huge advantage worth using to the full. For each question, prepare a short, specific and to-the-point answer.
When preparing your answers, follow a few rules:
- Answer the question directly. Say the answer first, then add to it. The committee does not want a three-minute introduction before you reach the point.
- Back the answer up. Refer to a specific part of the work, to data or to a source. That shows you are talking about your own work, not in general terms.
- Be concise. Two or three sentences per question is usually enough. A long monologue sounds uncertain and eats into your time.
- Admit limits. If a question concerns a limitation the work genuinely has, name it openly. An honest admission of a limit comes across as mature.
Do not memorize your answers word for word. It is enough to know the core of each answer well enough to say it in your own words even under pressure. Writing out both the questions and the answers on paper or in notes is a proven way to sort them in your head.
What to do with a critical report
A critical report is unpleasant, but it is no reason to panic. The opponent is there to criticize, that is the job. What is decisive is not whether the criticism is voiced, but how you respond to it in front of the committee.
First, read the report at a distance. Right after the first read, a strict report seems worse than it really is. Let it sit for a few hours and come back to it with a cool head. Then sort the objections into three groups:
- A justified objection you cannot deny. Admit it. Explain how it arose and say how you would do it today. A mature reaction to a mistake makes a better impression than denying it.
- An objection where you deliberately did otherwise. Explain, matter-of-factly, why you chose that approach and what alternatives you considered. The committee appreciates a thought-through decision, even when the opponent disagrees with it.
- A misunderstanding or oversight. Politely set the record straight on where the information appears in the work, or how it was meant.
Never defend an obvious mistake against the facts, and do not get into a personal dispute with the opponent. The goal is not to win an argument but to show that you understand the topic and can think critically about your own work. That is what the committee evaluates. You can read more on how to avoid needless stumbles at the defense among the common thesis mistakes to avoid.
Common mistakes when working with reports
A large share of needless losses at the defense happens before it, while working with the reports. Avoid these mistakes:
- Opening the reports too late. Anyone who reads them only just before the defense has no time to prepare answers. Read the reports as soon as they are available.
- Overlooking the questions for discussion. The report questions are a mandatory part of the defense. Turning up unprepared for them is a loss of points that is easy to avoid.
- Taking the criticism personally. The opponent's report is meant to be critical. An emotional reaction only makes the situation worse.
- Defending the indefensible. Insisting on your point against a clear fact comes across worse than an honest admission of a mistake.
- Preparing only the presentation. Your response to the reports and your answers to the questions matter as much as the slides, sometimes more.
- Memorizing answers by heart. A memorized answer falls apart when the question is worded differently. It is better to know the core and say it in your own words.
If you are still working on the thesis itself and want to be sure it will be easy to defend and the reports will not catch it out, take a look at our master's thesis services or write to us via contact. With a well-prepared thesis, even the reports sound milder.
Frequently asked questions
What is the difference between the supervisor's report and the opponent's report?
The supervisor's report is written by the thesis supervisor and mainly evaluates the course of the collaboration, your independence and whether you met the brief. The opponent's report is written by an independent opponent and critically assesses the content, methods, results and formal side. The opponent's report tends to be more critical and almost always contains questions for discussion.
When do I receive the reports before the defense?
The reports are usually available a few days before the defense, often through the faculty information system. The exact release time differs by institution, so check the deadlines in your guidelines and watch the system so the release does not surprise you.
Do I have to respond to every comment in the report?
You should respond to the questions the report explicitly asks, because they are a direct part of the defense. For general objections it is enough to explain your approach factually or to openly admit and justify a limitation. You do not have to address every sentence, but do not underestimate the questions for discussion.
What does it mean when the opponent's report is very critical?
A critical opponent's report is common and does not mean you will not defend the work. The opponent's job is to find weak spots. What matters is how you respond to the objections. A calm, factual and honest response makes a better impression on the committee than denying obvious mistakes.
Who proposes the grade in the report?
The grade in the report is proposed by its author, that is the supervisor or the opponent. This proposal, however, is only indicative. The final evaluation of the defense is decided by the examination committee in a closed session, where it weighs the quality of the work, both reports, your presentation and your answers to the questions.
Does the opponent always write questions too?
The opponent's report almost always contains at least one question for discussion that you are expected to answer at the defense. The supervisor's report contains questions sometimes. So go through both reports sentence by sentence and write out each question separately, so that none of them slips past you.