What distinguishes the top B schools like IIMs, XLRI, FMS, and SPJIMR from the rest?

IIMs, FMS, and XLRI are among the top management institutes in the country. They were able to establish a brand while the competition was quite low and there are several causes that distinguish these top b-schools, which are stated below:

• Alumni Base: The best students from these campuses did extraordinarily well in the various sector, giving these campuses an enviable reputation. This is a trend that is expected to continue, and alumni success is one of the most critical parameters used by organizations to measure and rate these institutions.
• Faculty: These institutions attracted the best teachers and continued to improve their course structure and teaching methods, providing them with an advantage over the competition.
• Innovation: There are also few newer campuses, such as SP Jain, which were fast to innovate with their selection criteria and the course format and in turn established a good reputation in a small period of time. 
• Placement: Alumni success has prompted the biggest companies in the country to employ from these campuses regularly, and their presence on these campuses remains the primary reason why these institutions can recruit the greatest talent year after year.

In short, students, teachers, and recruiters are the determining variables.