JSS is an average private college in comparison to state colleges. JSS has two programs one is PGDM which us 2 year full course and other is oart time MBA of a year. For admission in JSS you need to give either CMAT or MAT exam as both the scores are valid for admission.

It's fees is also low which is around 4 lakh for 2 years. But as fees is low so don't expect a good ROI because placement from this college is not good. Most of the students are dependent upon off-campus placements for their Job.

I personally will recommend you if you have any other option please make sure to evaluate them before joining colleges like JSS or if possible then prepare once more and appear for CAT exam. If not reputated colleges like IIMs you still have a high probability of getting a way better college than JSS. If you are looking forward to pursue MBA degree from karnataka itself then TAPMI is a pretty good option. It's fees is high but also has a very good placement record in comparison to JSS.

Anyway it's your call, in short JSS is a decent college with low fees and a good college to learn and pursue your MBA degree but don't keep high expectations from placements.

All the best for your future!!