Hey,
To get an admission in ISI Kolkata, one must go through the ISI Entrance Exam for various UG, PG and JRF courses offered by the institute. On clearing the entrance you get an interview call.
For getting admission into PG course one must score above the threshold declared by ISI in GATE or must clear the cutoffs of ISI Entrance Exam.
For more information about the exam, visit the site:
https://www.sarvgyan.com/articles/isi-2018
Similarly, for getting admission in CMI one must go through the entrance exam which will be held on
15th May,2018
. For more info, visit the link:
All the best!