My friend is currently studying in IISWBM, and according to his experience here are some crucial points you might need to consider to get a view:

1. IISWBM is an old B-school, but it used to be good only till 2010. After 2010, due to politics, the college has degraded from a Tier-2 B-school to a Tier-3 B-school.
2. In the current scenario, the bars are set very high with big competitors like IMI Kolkata and MDI Murshidabad. IMI Kolkata pedagogy is superb and industry inclined with their brand name so they started giving much better exposure and placements. And the placement at MDI Murshidabad is so good that even We School Mumbai, Lal Bahadur Sastri Institute of Mngt Studies can’t give.
3. IISWBM highly depends on IMRB Kantar and ICICI Bank for placements, and if they stop coming in the future the placement will be hardly 30%. PwC India and KPMG used to visit IISWBM but discontinued after 2015. Citi Bank ,IDFC, Infosys, EY, Deloitte, Standard Chartered, Nomura FinTech stopped coming to IISWBM since long back.
4. The curriculum at IISWBM is very outdated and keeps going on with no improvement and modernization. Even the semester results are never on time.
5. Never believe in their placement records as they will not show the pathetic condition they are in right now ( Currently hiding their Retail and Sports Department placement report), soon they may stop displaying their MBA placement reports too if this goes on.

At the end of the day, it is highly recommended to avoid joining IISWBM.