Pmrc2928,
GMAT is one of the criterions we look for while evaluating applications. There are no cut-off scores - a good score strengthens your application but does not guarantee admission while a low score dos not necessarily mean exclusion.
I would like to add that the admissions to ISB are very competitive and your actual admissions will depend on the quality of your application which include essays, your past academic record, your GMAT score, the recommendation you get from the reviewers whom we will contact and your performance in the interview ( assuming you are called for the admission interview). We really look at the overall quality of the experience and not haw fragmented or other wise it is.
Admissions Team