Overseas Indian candidates can apply to IIMs with a valid GMAT score instead of a CAT score. Required GMAT score is at least 700. Indian residents outside India fall under the "Overseas Indian candidates" category provided the candidate is an Indian passport holder who expects to live, work or study outside India, for at least 12 months continuously
The procedure for admission to IIMs (and other B schools) is the same for all categories. It is an entrance test (CAT/XAT/SNAP etc) followed by a personality assessment process. ST candidates can get a call from IIMs at a CAT score of 75%ile but to ensure a call from all the IIMs, the target score should be over 80%ile. With an 86% in 10th grade, 89.5% in 12th grade and 64% in my Bachelors of Pharmaceutical Sciences and 8.7 GPA in my Masters in Chemistry from a US University,
- A call from IIM A is possible at a CAT score of 99.65%ile for engineers but as a non-engineer (science graduate) interview call is possible at a score of 99.3%ile.
- IIM C has a 77% weight for CAT score, 10% each for marks in X & XII and 3% for academic diversity hence a general male needs around 99.55%ile for an interview call.
- Unlike the above two, IIM B and IIM L have a complicated process with weight for almost everything. IIM B considers normalised scores of X & XII, work experience and graduation marks. It has a low weight for CAT score and hence with your profile you can get call from IIM B at 98%ile.
- IIM L has a 76% weight for CAT score hence a higher CAT score (compared to IIM B) of around 99%ile would be needed for an interview call.
- XLRI Jamshedpur would require a XAT score of 95%ile for an interview call but converting the call is usually difficult at a score lower than 97%ile.
- FMS Delhi University would give an interview call at 98.5%ile but to be sure of converting the call a CAT score of over 99.5%ile would be required.