The Indian School of Business delivers its flagship Post Graduate Programme in Management as a single full-time residential year, on campuses in Hyderabad and Mohali. Twelve months has to hold what most Indian business schools spread over twenty-four, and nearly every structural difference between the PGP and a two-year IIM PGP traces back to that compression. The contrasts below use IIM Ahmedabad‘s two-year MBA as the reference point.
The admissions test: GMAT or GRE, not CAT
ISB admits on a GMAT or GRE score together with essays, references and an interview. Its eligibility page states there is no minimum GRE or GMAT score needed to apply and no preference between the two tests. IIM Ahmedabad’s two-year MBA runs on CAT, with published sectional and overall cut-offs — 75 to 95 overall percentile for non-PwD candidates, depending on category — applied before any shortlist is drawn.
The practical difference is timing and portability. GMAT and GRE run through the year and can be retaken, so a bad morning costs weeks; CAT is a single November sitting, so a bad morning costs a cycle. A GMAT score also travels to schools outside India — useful when hedging an Indian application against an overseas one.
The experience floor is enforced at two years
ISB states that the PGP is designed for students with full-time work experience of a minimum of 24 months. IIM Ahmedabad’s MBA has no such floor: it accepts fresh graduates and experienced candidates alike, and while 12 to 36 months of experience feeds into the rating score, it is never a prerequisite.
ISB used to run deferred-admission routes (the Young Leaders’ Programme and the Early Entry Option) for candidates still studying or very early in their careers, but it has discontinued them; fresh graduates and those with under two years of experience are now pointed to PGP YL, a separate 20-month programme with its own cohort. The one-year PGP itself requires a minimum of two years’ full-time work experience. The classroom consequence is arithmetic before it is anything else: the PGP Class of 2026 numbered 826 students with an average age of 26, and a case-and-discussion format built for that room is not the same instrument as one that must also teach first-jobbers.
A year of short terms against six long ones
IIM Ahmedabad’s MBA runs across six terms, three per year, with first-year terms of 10 to 14 weeks and second-year terms of 9 to 12. ISB compresses a comparable load into one year of much shorter terms; its published curriculum places the mandatory core across Terms 1 to 3, with electives opening after that.
Compression changes the rhythm of the year, not only its length. Examinations recur every few weeks instead of arriving twice a year, and recruiting, club commitments and elective bidding overlap with coursework more or less continuously. There is very little slack in which to absorb a bad month.
Core credits first, then elective credits
ISB publishes the structure as 14 credits of core — 10 mandatory core courses and 4 flexible core options — then 18 credits of electives. The named mandatory core includes Financial Accounting in Decision Making, Managerial Economics and Statistical Methods for Business Decision Making in Term 1; Business, Society and Non-Market Strategies, Frontier Technologies and Navigating Macroeconomic Uncertainty in Term 2; and Managerial Accounting in Decision Making alongside The Art and Science of Managerial Decision Making in Term 3. Leading Self and Teams and a verbal communication module in orientation week complete the list. The job of that block is to move an engineer, a chartered accountant and a consultant onto shared analytical ground fast enough that Term 4 electives can assume it.
Electives span seven functional areas (Entrepreneurship, Finance, Marketing, Operations, Information and Technology Management, Strategy and Leadership) and four industry concentrations: Healthcare, Infrastructure, Manufacturing and Public Policy. No rigid specialisation is imposed; a student wanting depth in one direction follows a grouping. Allocation runs on bidding, so the elective plan sketched at application time may not survive the auction.
A two-year IIM PGP reaches a similar shape by a longer route — a heavier first-year core and a full second year of electives, with an extra twelve months in which to change direction.
The internship the one-year model drops
ISB’s own FAQ puts it plainly — “As ISB’s PGP is a one-year programme, a summer internship is not possible.” In its place the school makes the Experiential Learning Programme mandatory: student teams working live problems for real organisations, plus four block weeks of one-week modules including study treks and simulation-based courses.
At IIM Ahmedabad, students undertake summer training with the institute’s corporate partners between the two years, an eight-to-ten-week block in April, May and June. For a career switcher that internship works as a low-risk trial run and, frequently, as a route to a pre-placement offer. A PGP candidate has to make the same case from prior record, electives and project work instead. Anyone planning a hard pivot should weigh that missing proof point ahead of any other difference on this list.
Where the accreditations differ
ISB received AMBA accreditation in May 2020, becoming the 100th school in the world to hold the triple crown of AMBA, EQUIS and AACSB. IIM Ahmedabad was the first Indian business school to receive EQUIS, in June 2008, and was re-accredited in 2025 for five years, the maximum term EQUIS grants.
Both are re-reviewed periodically, so accreditation status is always a snapshot with a date on it.
Certificate at ISB, MBA degree at an IIM
ISB’s FAQ is unambiguous: “No, only universities can award a degree in India. ISB PGP is neither a degree nor a diploma.” Because it awards neither, ISB has not sought recognition from the AICTE or the UGC, and points to its AACSB and EQUIS accreditation instead.
IIM Ahmedabad awards an MBA degree. That became possible under the Indian Institutes of Management Act, 2017, which declared the IIMs institutions of national importance and gave them degree-granting power; before it, they awarded post-graduate diplomas. In private-sector hiring the distinction has been a non-issue for years, but it can matter where a formal degree is a stated requirement: some government and public-sector roles, certain doctoral admissions. If that applies to your intended path, ask ISB admissions for the answer in writing before you apply.
ISB PGP and a two-year IIM PGP, side by side
| Feature | ISB PGP | IIM Ahmedabad MBA (PGP) |
|---|---|---|
| Duration and structure | 12 months, full-time residential | Two years, six terms (three per year) |
| Admission test | GMAT or GRE; no minimum score stated, no preference between them | CAT, with sectional and overall cut-offs, 75 to 95 overall percentile for non-PwD categories |
| Work experience | Minimum 24 months full-time | Not required; fresh graduates eligible |
| Summer internship | None; not possible in a one-year format. Mandatory Experiential Learning Programme instead | Eight to ten weeks with corporate partners, between the two years |
| Qualification awarded | Neither a degree nor a diploma; not AICTE/UGC recognised | MBA degree, under the IIM Act, 2017 |
| Indicative programme fee | Rs 34,48,000 + GST, 2027-28 batch, shared accommodation, single instalment; covers admission, commitment and tuition fees | Rs 27,50,000 for the PGP 2025-27 batch, including tuition of Rs 20,10,000; excludes boarding and personal expenses |
Those fee figures are not directly comparable: different batch years, different inclusions, and one buys twelve months while the other buys twenty-four.
The bigger line in the comparison is the salary you do not earn. A candidate leaving a job paying, say, Rs 18 lakh a year gives up roughly Rs 18 lakh at ISB and roughly Rs 36 lakh across two years at an IIM, less any internship stipend. Run that calculation on your own salary before comparing the fee figures — for most applicants who already clear the 24-month bar, forgone income is the larger number by a wide margin.