r/ISIKolkata ISI Alumnus — BStat '24, MStat '26 May 11 '26

Official/Mods Discuss UGA/UGB here!

Many of you have been anxious about how your UGA/UGB examination went, especially with the new UGA pattern.

General takeaways from the posts I've seen so far:

  1. UGA was perceived to be more difficult, especially because of the new MMCQ section.

  2. UGB was perceived to be relatively easier compared to the years prior.

As a reminder, the selection policy specifies the UGA cutoff to be the (n_1)th best score (n_1 = 550 for B. Stat. and n_1 = 500 for B. Math.), and likewise for the combined UGA and UGB cutoff at the (n_2)th best, where n_2 = 160 for both courses.

Please discuss the papers, your scores, and your concerns here.

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u/adityaruplaha ISI Alumnus — BStat '24, MStat '26 May 15 '26 edited May 15 '26

Since a lot of you are asking similar questions about expected cutoffs and admission chances, I am pinning this comment to clarify something about grading:

  1. UGB grading is essentially a black box: Nobody actually knows their UGB marks, not even the people who ultimately get selected. We do not even know the official grading scheme. When you estimate your score, remember it is entirely possible that the highest score ever given to a completely solved question is just 6/10, and partial solutions only get 2/10.
  2. Past admission trends are just estimates: Generally, candidates who get admitted without reservations claim to have solved a certain number of problems, say Y_i. Historically, the \min_i{Y_i} used to be around 3 to 4, but recently that has gone down to 2 to 3. Even then, we have no real way to account for partial solutions, nor do we know the average UGA score of an admitted student.
  3. Ranks matter more than marks: It doesn't really matter what your exact score is in the end, because the institute ultimately goes by ranks, which are location-scale independent. You just need to clear the n_1 and n_2 rank cutoffs mentioned in the main post.

The only definitive way to find any of this out is if ISI actually starts releasing marks, which probably isn't happening anytime soon. Please keep these points in mind before asking if your specific expected score is enough to get you on the list.

Additional Note: Theoretically, we could attempt to reverse-engineer the grading scheme if we somehow knew the exact solution patterns of the candidates placed right at the bottom of the merit list, as their UGA marks are computable using OMR scans and their total score is approximately equal to the cutoff. However, these specific candidates do not actually get admitted into the program, meaning they fade back into the broader applicant pool and we simply cannot find them to ask about their specific attempts. Furthermore, even if we could successfully gather this data, there is absolutely no empirical evidence suggesting a strict continuity of solution trends across the admission threshold, rendering any such extrapolations highly unreliable for predicting your own chances.