CAT

Hello Dipti,
The Common Admission Test (CAT) is a computer based test held in India. The test scores a candidate on the bases of Quantitative Ability (QA), Verbal Ability (VA) and Reading Comprehension (RC), Data Interpretation (DI) and Logical Reasoning (LR). The Indian Institutes of Management (IIMs) started this exam and use the test for selecting students for their business administration programs. The test is conducted every year by one of the IIMs based on a policy of rotation. In August 2011, it was announced that Indian Institutes of Technology (IITs) and Indian Institute of Science (IISc) would also use the CAT scores, instead of the Joint Management Entrance Test (JMET), to select students for their management programmes starting with the 2012-14 batch. Common Admission Test (CAT) 2015 was conducted by the Indian Institute of Management Ahmedabad (IIM Ahmedabad) on November 29, 2015. IIM Indore held Common Admission Test for the years 2013-14.

Here are few good coaching institutes:
1. TIME - seems to have the most stable setup of teachers over the years, has the best material without doubt, and their test series is pretty decent.
2. IMS - Had the best material but kept on beating itself, the material became so difficult, it surpassed the required level. Same with the test series. IMS Lucknow faculty has been undergoing cycles of good and bad, lacks stability.
3. Career Launcher - Change of franchisee, change of locations, completely unstable. Also, poor material and poorer test series.
4. Team Satyam - Big balloon of gas.
5. PT, AMS - I don't know how do they remain in business.