Hello Rasi, I am going to differentiate you all the business school hope this will help you to evalute the best one. 

KOLLAM BUSINESS SCHOOL

Type of college                                     Private

Admission                                            Entrance Test

Name of Entrance Exam                        CAT/MAT/XAT/KMAT/GRE/GMAT/CMAT

Commencement of Application form       December/ January 

Course Offered                                     MBA

Eligiblity                                               50% in 10th, 12th & Graduation    

Placement                                            Maximum 12-13 lacs

     ERNAKULAM BUSINESS SCHOOL

Type of college                                     Private

Admission                                            Entrance Test

Name Of Entrance Exam                        CAT/MAT/XAT/KMAT/GRE/GMAT/CMAT

Commencement of Application Form       December/ january

Course Offered                                      MBA

Eligibility                                               50% in 10th, 12th & Graduation    

Placement                                             Maximum 16-18 lakhs

      COIMBATORE BUSINESS SCHOOL

Type                                                     Private

Admission                                             Entrance Test

Name Of Entrance Test                           CAT/MAT/XAT/KMAT/GRE/GMAT/CMAT

Commencement Of Application Form       December/January

Course Offer                                          MBA

Eligibility                                               50% in 10th, 12th & graduation  

Placement                                             Maximum 7-8 lakh                              

 According to the above information the Ernakulam business school offered the maximum placement offered by the top most companies of India. The teaching faculty and  infrastructre of the campus is approchable. It is one of the top B school in India. hope you will go through all the information.

All the very best !