ISB PGP Interview vs IIM Interviews: Differences, Prep and What to Expect

Oct 1

10 min read

If you have interviews lined up at ISB and at one or more IIMs, you are probably preparing one set of answers and hoping it works everywhere. It will cover most of what you face. The rest is where candidates lose marks, because ISB and the IIM one-year programmes run interviews that look alike on paper and feel very different in the room.

Updated for the 2026-27 admissions cycle, October 2026.

This guide compares the ISB PGP interview with the interviews at IIM Ahmedabad (PGPX), IIM Bangalore (EPGP), IIM Calcutta (MBAEx) and IIM Lucknow (IPMX). It explains what each panel is testing, what to expect on the day, and how to prepare one core story with a programme-specific layer on top. Where a fact comes from an official page, we link it. Where it comes from candidate reports, we say so, because panels change and accounts vary.

Where the cycle stands right now. ISB lists Round 1 interviews from the second week of October to the second week of December 2026, and Round 2 interviews from the fourth week of December to the first week of February 2027, per ISB's deadlines page. IIM Calcutta lists MBAEx interviews on 31 October and 1 November 2026 (Round 1) and 19 and 20 December 2026 (Round 2) on its MBAEx admissions page. IIM Bangalore lists EPGP Round 2 interviews on 12 and 13 December 2026 on its EPGP admission process page. Our IPMX interview guide lists the Phase 1 written test and interview for 24 October 2026, taken from IIM Lucknow's page, so confirm it there. If one of these dates is yours, you have weeks, not months.

The comparison in one table

The table mixes official statements with candidate reports. Each cell says which is which.

Programme	Written part	Panel and length	Style reported	Weight in selection
ISB PGP	Two prompt written exercise, about 20 minutes, typed on your own laptop (candidate reports).	Panel of 2 to 3, roughly 30 to 60 minutes (candidate reports).	Conversational and candidate led. Probes career progression, goals and essays.	ISB does not publish weights.
IIM Ahmedabad PGPX	Essays submitted after shortlisting (IIMA). Candidates report a short extempore before the interview.	Face to face panel (IIMA). 2 to 3 professors, about 15 to 25 minutes (candidate reports).	Active disagreement, composure under pushback (candidate reports).	IIMA lists the criteria but we found no weights.
IIM Bangalore EPGP	Writing ability test (IIMB). Reported as one prompt, about 250 words, handwritten.	2 to 5 faculty and alumni, about 15 to 35 minutes (candidate reports).	Cordial tone, forensic questions on your own domain.	Composite of academics, test score, experience, WAT and interview. Weights not published (IIMB).
IIM Calcutta MBAEx	Pen and paper WAT scored out of 15 (IIMC).	2 to 3 faculty and alumni, 15 to 30 minutes, sometimes 45 to 50 (candidate reports).	Reasoning under pushback. Why MBAEx over ISB or PGPX.	Interview 30 percent, WAT 15 percent (IIMC).
IIM Lucknow IPMX	Written test of 20 to 30 minutes on the same day (candidate reports).	Online or on the Noida campus, same day as the test.	Probes depth behind resume claims.	Interview 30 percent, GMAT or GRE 30 percent, WAT 10 percent (IIML, per our IPMX guide).

What actually separates ISB from the IIMs

The ISB interview is candidate led. IIM panels are probe led.

At ISB, the conversation follows your story. The panel opens with your profile, then follows whichever thread you give them: a career move, a result you mention, a goal. ISB's own FAQ page says only that interviews are held and that there is no group discussion. If your story is vague, the ISB panel has nothing to push against and the interview drifts. Our guide to what is asked in ISB interviews breaks down the eight buckets the questions come from.

IIM panels tend to pick their own thread. At IIM Bangalore EPGP, candidates report a cordial tone followed by one factual question on the field they claim to know, as we describe in our EPGP interview guide. At IIM Calcutta MBAEx, candidates report being asked why they chose MBAEx over ISB or PGPX and then having the answer tested. That is the opposite problem: you can have a clear story and still be stopped by a specific question.

The written part is different at every school

ISB candidates report a written exercise with two prompts in about 20 minutes, typed on their own laptop. The prompts last cycle were ethical dilemmas from workplace situations, not current affairs. Our ISB interview day guide covers the logistics.

IIM Calcutta states that its WAT is pen and paper and scored out of 15. IIM Bangalore lists a writing ability test inside its composite score, and candidates report a handwritten piece of about 250 words. IIM Ahmedabad's admissions page describes essays submitted after shortlisting and a face to face interview. It does not list an extempore, so treat the extempore as candidate-reported. If you are preparing for it, our PGPX extempore topics guide has the frameworks.

What the panel has read

Accounts differ here. Applicants and consultants last cycle said ISB interviewers have your application, essays and recommendation but not your test scores. Some candidate accounts say panels had not read the essays closely. Prepare as if the panel has read everything, and be ready to explain every line. The cost of assuming otherwise is higher than the cost of over-preparing.

Pressure style

ISB panels were described last cycle as conversational, with some panels more probing than others. IIM Ahmedabad panels are the ones candidates most often describe as pushing back on purpose, which is why the extempore and the follow-up questions feel harder than the content. IIM Calcutta sits in between: the panel tests whether your reasoning survives comparison with your own alternatives. These are reports, not official statements, so treat them as direction.

How much the interview weighs

IIM Calcutta publishes that the interview carries 30 percent of the MBAEx composite and the WAT 15 percent. IIM Lucknow publishes 30 percent for the interview and 10 percent for the WAT for IPMX. IIM Bangalore and ISB do not publish component weights that we could find. If the weights are not published, assume the interview can decide close calls between similar profiles.

XLRI is a different animal again

XLRI's GMP skips the written test. It asks for a statement of purpose after screening, then a faculty panel works through your whole application. Our XLRI GMP interview guide covers it.

Build one core, then add a layer

Do not prepare five interviews. Build one core and add a layer for each school.

The core has four pieces. A two minute story of your career with a reason for each move. A deep account of your best piece of work, with your own role, the decision you made and the result. Goals with a specific function, industry and reason an MBA is needed. And an honest account of a failure and what changed afterwards. If these four hold up, you can answer most questions at any panel.

The ISB layer

Know why ISB, specifically, not the IIMs. Prepare for a candidate led conversation: have three threads you want the panel to pull, and plant them in your first answer. Re-read your essays before the day, since questions often follow them. Practise the two prompt written exercise in 20 minutes, typed. Launchpad has a free WAT practice test in ISB's format with 144 topics and no sign-in: launchpad.careersimplified.co.in/wat.

The IIM Ahmedabad layer

Practise the extempore if you expect one: about a minute to think, about 90 seconds to speak, with one clear stance. Practise being disagreed with and holding your position without getting defensive. Our PGPX interview guide shows a structured way to take apart a topic.

The IIM Bangalore layer

Pick the three technical terms in your resume and prepare the mechanism behind each. If you cannot explain how something works in two minutes, take the term out. Practise a handwritten piece of about 250 words in 30 minutes.

The IIM Calcutta layer

Prepare a sharp answer to why this programme over the others. Be ready to compare yourself with your own alternatives, including a different programme or no MBA. Practise a pen and paper WAT. Our MBAEx interview guide has the detail.

The IIM Lucknow layer

Prepare the WAT and interview together, since they happen on the same day, and expect the panel to test the depth behind your resume claims.

Two worked examples

Example 1: an ISB style question

Question: You moved from consulting to a startup, then to a corporate strategy role. Why?

A weak answer walks through the dates and says each move was for growth.

A stronger answer has one theme and one reason per move: "I started in consulting because I wanted breadth quickly. After two years I realised I was advising on decisions I never saw through, so I joined a startup to own outcomes. That taught me how thin margins force trade-offs, and it also showed me I wanted to work at larger scale. The strategy role gave me that. My next step is a move into product strategy at a platform company, which is why I need the structured exposure ISB offers."

Notice the structure. One theme (ownership of outcomes), a reason for each move, a lesson from each, and a link to the goal.

Example 2: an IIM style question

Question: You said you work in credit risk. How does a bank decide the interest rate on a loan?

A weak answer says that it depends on risk.

A stronger answer gives the mechanism with numbers: "Roughly, the rate is cost of funds plus expected loss plus operating cost plus margin. If cost of funds is 6.5 percent, and the borrower has a 3 percent probability of default with 40 percent loss given default, expected loss is 1.2 percent. Add 0.8 percent operating cost and a 1 percent margin and the rate comes to 9.5 percent. In practice, collateral, tenure and competition move each piece." The numbers are illustrative. The point is that the panel hears a mechanism, not vocabulary.

A question bank by category

These are drawn from what candidates reported across ISB and the IIMs. The questions vary from person to person, so use them to practise structure, not to memorise answers.

Personal narrative

Approach: lead with a theme, give a reason for each move, and end on where you are heading.

Walk me through your profile.
What defines you beyond your resume?
Why did you leave your first job?
What is the one decision in your career you are proudest of?
If I called your manager, how would they describe you?

Work depth

Approach: separate "we" from "I", give the problem, your role, your decision and the result.

What exactly did you do in your current role day to day?
Describe the hardest problem you solved and your part in it.
What would have happened if you had not been on that project?
Which part of your job could AI do in five years, and which part could it not?
Explain how the core process in your industry actually works.

Goals and why this programme

Approach: name a function, an industry and a reason you cannot get there without an MBA.

What do you want to do after the programme, and why?
Why can you not do that without an MBA?
Why this programme and not the others you applied to?
What if you do not get the role you want?
Why now?

Leadership and ethics

Approach: pick one real story, say what you did and what you learned, and avoid hero stories without reflection.

Tell me about a time you influenced without authority.
Describe a conflict with a senior and how it ended.
Have you faced an ethical dilemma at work?
A teammate is frequently late and others disapprove. What do you do?
When did you disagree with a decision and still carry it out?

Self awareness

Approach: be specific, own the problem and show what changed.

What is your biggest failure?
What feedback do you receive most often?
What would you change about your past decisions?
Where do you think you are weakest compared with other candidates?
What do you do when you are wrong?

Context and pushback

Approach: structure your answer, take a position and hold it politely when challenged.

What is the biggest challenge in your industry right now?
Is a one year MBA the right choice for you compared with a two year MBA?
Why would a recruiter pick you over a younger candidate?
If you were the decision maker on a topical policy question, what would you do and why?
I disagree with your answer. Convince me.

A four week preparation plan

Week 4 before the interview. Write the four core pieces. Read your resume and essays line by line and mark every claim you cannot defend in two minutes. Record yourself giving the two minute story.

Week 3. Build the work depth answers. Pick your three strongest projects and write the problem, role, decision and result for each. Practise the mechanism questions for your domain.

Week 2. Add the programme layers. Do two timed written exercises per week in the format each school uses, typed for ISB and handwritten for IIMs that ask for it. Do your first mock panel and review the recording. A mock helps most when the panel interrupts you, as we explain in why mock interviews matter.

Week 1. Do two more mocks, one in the style of each school you face. Fix repeated habits: long preambles, "we" without "I", and vague goals. Prepare logistics: laptop, ID, travel or connection checks.

The day before. Re-read your essays and resume. Sleep. Do not learn new material.

If you want a deeper option beyond a free guide, Launchpad's Interview Practice Tools let you rehearse the written exercise and the panel round together.

What to expect on the day

Expect to be at the venue or online early, to do the written part first, and to meet a panel of two to five people. Expect the first question to be an open one, usually about your profile. Expect at least one follow up that makes you explain a claim in more depth. Expect a question that you did not prepare. When that happens, slow down, say you want a moment to think, structure your answer and give a clear position.

After the interview, results come together at the end of the round. ISB lists end-December 2026 for Round 1 and mid-February 2027 for Round 2. Talk to your manager about your notice period while you wait, because a long notice period is hard to compress after the fact.

FAQ

How is the ISB interview different from the IIM interviews?

ISB panels are candidate led and follow your story, and ISB candidates report a typed written exercise. IIM panels tend to pick their own thread, with a domain probe at IIM Bangalore, pushback at IIM Calcutta and IIM Ahmedabad, and handwritten written tests at some schools.

Is there a group discussion at ISB or the IIMs?

ISB's FAQ page says there is no group discussion. IIM Calcutta's admission policy does not mention one for MBAEx.

Can I prepare once for both ISB and the IIMs?

Yes for the core: story, work depth, goals and failure. No for the written format and the style of questioning, which differ by school.

How long are these interviews?

Candidates report about 30 to 60 minutes at ISB, 15 to 35 minutes at IIM Bangalore EPGP and 15 to 30 minutes at IIM Calcutta, sometimes longer. These are reports, not official figures.

Does the ISB panel see my test score?

Applicants and consultants reported that the panel has the application, essays and recommendation but not the test scores. That is reported, not official.

What to do now

Write your four core pieces this week.
List the format each of your target programmes uses and practise that exact format.
Mark every claim in your resume you cannot defend in two minutes.
Book two mocks before your first interview date.
Check dates on each official page, since schedules shift.

Panel sizes, durations and styles come from candidate reports and can change. Confirm formats and dates on each school's official page.