With a CAT 2025 percentile of 99.27 and all sectional percentiles above 93, your son has a strong and competitive profile, but calls from IIM Ahmedabad, Bangalore, and Calcutta depend on more than just CAT score.

For IIM Ahmedabad, the CAT cutoff for the general category is usually very high (around 99+ overall and strong sectionals). However, IIM A gives very high weightage to academic consistency, especially Class 10 and Class 12 marks. With 10th at 89% and 12th at 80%, his academics are decent but not exceptional by IIM A standards, where many shortlisted candidates have 90%+ in both. A call from IIM Ahmedabad is possible but not guaranteed, and would depend on how his profile compares with others in the same academic category.

For IIM Bangalore, the chances are better. IIM B places significant weight on work experience, and 2 years of experience is considered ideal. His CAT percentile, good sectionals, engineering background, and work experience together make him a strong contender for an interview call, provided he meets the institute’s academic eligibility and normalization criteria.

For IIM Calcutta, the selection process is more CAT-score driven, especially for engineers. With a 99.27 percentile and strong sectionals, he stands a fairly good chance of getting a call, as IIM C traditionally gives relatively less weight to Class 12 marks compared to IIM A.

Overall, while calls from all three are not guaranteed, he has realistic chances for IIM Bangalore and IIM Calcutta, and a borderline but possible chance for IIM Ahmedabad. In addition, he is very likely to receive calls from other top IIMs such as IIM Lucknow, Kozhikode, Indore, Shillong, and several top non-IIM B-schools like FMS Delhi, SPJIMR, and IIT Bombay/Delhi.

The final conversion will depend heavily on performance in the personal interview, clarity of goals, quality of work experience, and communication skills, so focused PI preparation will be crucial at this stage.