St John's College Cambridge Economics Interview
What to expect and how to prepare for St John's Economics interviews in 2026
See the packs — start with Economics I, £180What to expect and how to prepare for St John's Economics interviews in 2026
See the packs — start with Economics I, £180St John's College is one of Cambridge's largest and most academically distinguished colleges, with a strong tradition in Economics. Economics at Cambridge is taught through the supervision system, in which students are expected to engage rigorously with economic theory, quantitative analysis, and argument in one-to-one sessions with their supervisors. The interview previews exactly that experience: supervisors want to see students who can reason quantitatively, engage with graphs and data critically, and construct and defend economic arguments with precision. Candidates usually begin with the Economics I pack, £180.
A common misconception among Economics applicants is that prior knowledge of economics — A-level Economics, in particular — is the most important preparation. It is not. What matters much more is the quality of your mathematical and analytical reasoning and your ability to think clearly about unfamiliar economic problems. Many successful Cambridge Economics candidates come from a Mathematics background with limited formal economics study. What consistently distinguishes strong from average interview performances is not the breadth of economic knowledge but the rigour of the reasoning.
Cambridge Economics applicants typically have two interviews, with St John's applicants interviewing at the college and at a second college through the pool. Each interview lasts approximately 25 to 35 minutes. St John's Economics interviews are problem-led and quantitatively rigorous. Supervisors present graphs, scenarios, or economic arguments and ask you to reason through them: explaining what a graph shows, identifying the conditions under which a conclusion holds, or thinking through the second-order effects of a policy change.
St John's Economics supervisors also ask conceptual and argumentative questions. You may be asked to explain the intuition behind an economic concept, evaluate a claim about how markets behave, or consider the implications of relaxing a standard assumption. The ability to reason clearly about economics — not just to apply formulas but to think about what is actually happening in economic terms — is what tutors are looking for.
The quantitative half, written out
The Economics Interview Pack takes rent-control, carbon-pricing and current-account questions of the kind below and works the algebra alongside the diagram, with technique notes from specialist subject tutors — £180, one of 30 subject packs. Free samples exist in nine other subjects if you want to see the format before buying, and we run 1-to-1 mock Economics interviews as well. Economics is split across two packs, and taking both is 10% off at checkout.
See the Economics packCambridge Economics is quantitative, and the interview shows it early
St John's supervisors move to a diagram or an algebraic step quickly, and candidates whose economics is strong on the descriptive side but rusty on the mathematics lose ground before they have said anything wrong.
Our specialist tutors work the descriptive and the mathematical sides together with applicants, so the algebra arrives without hesitation when a St John's supervisor puts a diagram up. The Economics Expert Pack at £180 is the written version of that: model answers that carry the working underneath the curve rather than describing it in words, with technique notes from specialist subject tutors.
Book a Free Consultation Economics expert pack £180 Message us on WhatsAppEnsure your mathematical foundations are strong. Cambridge Economics is quantitatively demanding, and supervisors assess mathematical fluency at interview. Be comfortable with algebra, functions, basic calculus, and graph analysis. The Mathematics A-level skills you have developed are prerequisites for the interview, not optional extras.
Practise graph analysis. Economic graphs — supply and demand diagrams, indifference curves, production possibility frontiers, IS-LM models — are common in Cambridge Economics interviews. You should be able to read a graph, describe what it shows, identify the conditions it assumes, and reason about what happens when one variable changes.
Read about economics beyond the A-level specification. Accessible books such as Tim Harford’s The Undercover Economist or Diane Coyle’s GDP: A Brief but Affectionate History develop the habit of thinking economically about everyday phenomena, which is directly relevant to interview performance. You should also be able to discuss something economic from the news — a recent monetary policy decision, a trade dispute, a labour market trend — with analytical precision.
Our Cambridge Economics interview preparation service provides quantitative coaching, graph analysis practice, and mock interviews with specialist tutors.
For free samples in nine subjects and the full expert packs at £180, see our Cambridge Economics interview questions resource.
Practice with real interview questions
Economics is not one of the nine subjects with a free sample — the Economics expert pack carries the model answers and technique notes, £180.
See the expert packs → Or book a free consultation →No. Cambridge Economics does not require A-level Economics, and many successful applicants come from a Mathematics background without having studied economics formally. What matters is the quality of your quantitative and analytical reasoning. If you do have A-level Economics, you will have useful background knowledge, but you should not expect interviews to remain at A-level level — supervisors will quickly push into territory that goes beyond what you have studied.
Considerably so. Cambridge Economics is one of the most quantitatively rigorous Economics programmes in the world, and supervisors assess mathematical fluency at interview. You should be comfortable with A-level Mathematics at minimum, and Further Mathematics is an advantage. Supervisors will ask you to reason quantitatively, work with graphs algebraically, and draw mathematical conclusions from economic arguments.
Follow major economic stories with analytical attention: what is the Bank of England doing with interest rates and why, what is happening with inflation, what are the current debates about fiscal policy. You don't need to have comprehensive knowledge of current events, but being able to discuss one or two economic phenomena analytically — explaining what is happening in economic terms and what the effects might be — demonstrates the kind of engagement Cambridge Economics supervisors want to see.
Cambridge Economics applicants sit the ECON (or equivalent admissions assessment) which is used for shortlisting. Strong performance is important for securing an interview invitation. The assessment tests quantitative reasoning and economic thinking in ways that are directly related to what supervisors assess at interview. Prepare for the admissions assessment seriously and treat it as an integral part of your Cambridge application preparation.
Draw the diagram, then be told one of your assumptions is wrong
The rent control question above is standard until the supervisor asks what happens if supply is fixed in the short run, or if landlords can convert to another use. Redrawing under challenge is the part candidates have not practised.
Redrawing under challenge is the part no reading list prepares you for, so our mock interviews have a specialist tutor change a condition partway through and send written feedback afterwards. The £180 Economics Expert Pack shows what a redrawn answer has to account for — supply fixed in the short run, landlords converting to another use — set out as a full model answer rather than left as a hint. 91% of our students achieve their target grades.
See the Economics packs — £180 each Economics expert pack £180 Message us on WhatsAppMost Oxbridge interviews last between 20 and 45 minutes and are conducted by one or two subject tutors at the college you have applied to. The format focuses on academic discussion rather than personal statements — tutors typically give you an unseen problem, passage, or object and ask you to think through it aloud. They are assessing how you reason under pressure and engage with new ideas, not whether you arrive at a 'correct' answer. Preparation should therefore focus on practising structured reasoning and academic argument.
Leading Tuition's Cambridge Economics interview coaching is built around interviews like St John's. We run mock interviews with tutors who read Economics at Oxford or Cambridge, working through TMUA-style quantitative reasoning and unseen graphical analysis exactly as St John's supervisors use at interview. Sessions focus on applying economic principles to unfamiliar scenarios, defending an assumption under challenge, and reasoning aloud through a problem — the qualities St John's Economics tutors are assessing. Book a free consultation to start structured Economics interview preparation with a specialist tutor.
Free samples in nine subjects show you the format, the full expert packs are £180 a subject, and 1-to-1 coaching puts either of them under interview conditions.
See the expert packs →Leading Tuition has helped hundreds of students get into Oxford and Cambridge. 91% of our students achieve their desired grades. Rated Excellent on Trustpilot.