The Thinking Skills Assessment (TSA) is an aptitude test taken by students who are applying to certain courses at Oxford.
In this guide, we’ll outline the format of the exam, who needs to sit the test and why it’s an important part of the admissions process.
What Is The TSA?
The TSA is a computer-based admissions test used by Oxford. It’s implemented by Pearson VUE and consists of two distinct sections:
Section 1
This section consists of 50 multiple-choice questions and assesses problem-solving skills, critical thinking skills, and the ability to reason using everyday language. The time allowed for this section is 90 minutes.
Section 2
This is a writing task that evaluates an applicant’s ability to organise ideas and communicate them effectively in writing. Applicants answer one question from a choice of four and the time allowed for this section is 30 minutes.
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Who Sits The TSA?
The TSA is used by Oxford to assess the skills required for admission to specific courses. You will have to sit the TSA if you are applying to the following subjects:
- Economics and Management*
- Experimental Psychology
- History and Economics*
- Human Sciences
- Philosophy and Linguistics
- PPE
- Psychology and Linguistics
- Psychology and Philosophy
Most applicants will only need to complete Section 1 of the TSA. However, applicants for Philosophy, Politics and Economics (PPE) will also need to complete Section 2.
When Is The TSA?
Pearson VUE took over the delivery of the TSA in 2024 and announced that testing dates would work similarly to previous years. In prior years, all TSA sittings were held on one day and Pearson Vue have now confirmed this will be the case for those sitting the TSA in 2024 looking to secure entry in 2025 despite previously stating that test dates would be spread over a ten day period.
TSA Registration Dates
18th June – 19th September
TSA Testing Date
October 21st – 27th
How To Register For The TSA
Applicants taking the TSA will need to register for their test between 18th June and 19th September 2025. You’ll be able to book your test between 18th August and 26th September 2025. This is done via Pearson VUE’s online system, which requires you to create an account (this can be done before the booking period). The test will be sat between the 21st and 27th of October (not including the 25th and 26th).
When registrations open, you’ll need to select the testing centre you wish to attend for your test (there are over 100 open in the UK) and confirm a date and time slot based on the testing centre’s availability.
We’d recommend booking your tests as soon as you can after bookings open, as testing slots can get filled up fairly quickly.
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Why is the TSA used?
The TSA is considered by Admissions Tutors alongside your grades (both achieved and predicted), Personal Statement, references, and Interview, in order to determine whether you should get an offer.
Different colleges and Admission Tutors will give different weighting to each of these components, and therefore there is no sure-fire way to know how much consideration will be given in each application.
The TSA is used because applicants to these prestigious universities tend to be very closely matched on paper, with the majority of candidates receiving all A – A* grades. This is an extra differentiator for Admissions Tutors to look at.
How Important Is The TSA For Oxford Admissions?
The Oxford admissions process is a holistic one; a wide range of your academic performances are considered, including exam scores, interview performance and, of course, the TSA score. Performance in the TSA is not entirely indicative of a candidate’s success.
It is not uncommon to have the TSA referred to in your Interview.
You may be asked how you think the test went, or they may disclose your score to you. In Oxford Interviews, you may be asked about the content of the essay you wrote. It is used to gain a better understanding of how you think.
Furthermore, different subjects weigh the TSA exam differently. Many subjects require you to sit other entrance exams too, such as the MLAT or the HAT, which will clearly be considered too.
It is also the case that the average TSA scores of shortlisted and successful candidates will vary by subject. Successful PPE candidates often score around 70 which is a high TSA score. This is due to a combination of the TSA’s weighting as well as a reflection of the subject’s competitiveness.
How To Prepare for the TSA
It is often said that it is impossible to revise and prepare for the TSA. Given that the TSA has been designed to test the skills you should already possess, it means that your aptitude for critical thinking and problem-solving is difficult to change.
However, we don’t believe this is the case. While the skills being tested are general and can’t be revised in textbooks as easily, it’s still very possible to learn and improve the skills and techniques required for success in more active and practical ways.
Practising past papers under timed conditions is a sure-fire way to prepare, as well as taking on practice questions in a less strict environment. By doing so you are familiarising yourself with the question styles and will have a realistic idea of the time pressure.
Typically, the last few question questions of the assessment are the most difficult, so it is advisable to keep this in mind and possibly even consider practising this section of the Admissions Test first.
How is the TSA scored?
Scoring for the two sections of the TSA is done differently from one another.
For the multiple-choice Section 1 candidates score one mark per question. This section is marked by the computer and scored on a scale of 1-100, only around 10% of applicants score above 70.
The scores are calculated on the TSA scale to one decimal place. The scale is an estimate of the candidate’s ability, which makes scoring comparable by factoring in the question and overall test difficulty, using the Rasch statistical technique.
For those required to complete Section 2, the essay you write will be sent directly to the college you are applying to for them to mark. The mark is at their discretion.
The “mark scheme” will vary from Admission Tutor to Admission Tutor but regardless of marking style, all the tutors are looking for the ability to organise ideas in a clear and concise manner.
Conclusion
The TSA is the component of the admissions process that applicants understandably worry about. It is quite different from anything you will have encountered before.
Whilst the questions may seem foreign at this stage, it is a case of cultivating the required skill set throughout practice.
Now you have a better understanding of the TSA and what is in store during the Admissions Test, you are in the best possible place to score highly.
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