GATE, CAT or GRE: which entrance exam fits your plan

Start with what each exam is used for, because that is the question that decides the rest. GATE, the Graduate Aptitude Test in Engineering, is conducted jointly by IISc and the IITs, with a different institute organising it each year. Its score is used for admission to MTech and ME programmes at many institutes, for some research programmes and fellowships, and by some public-sector companies when shortlisting engineers. CAT, the Common Admission Test, is conducted by the IIMs on rotation and is the main entrance for their flagship programmes, which many other management institutes also accept. GRE is run by ETS, an American testing organisation, and is used by many master's and research programmes abroad, and by some business schools.

None of them guarantees a seat, a scholarship or a job. The official GATE site says so in plain words, and the same is true of the others. A score only gets you into the pool of applications that a programme or an employer will consider.

Now look at what each tests, because this is where your preparation time goes. GATE tests your own engineering or science subject, along with engineering mathematics and general aptitude. It is a test of depth in what you studied. CAT tests verbal ability and reading comprehension, data interpretation and logical reasoning, and quantitative aptitude. It is a test of speed and accuracy in general skills, not of your engineering subject. GRE tests verbal reasoning, quantitative reasoning and an analytical writing task. The verbal part is where many engineers spend most of their time.

The formats differ too. Recently GATE has been a computer-based test of about three hours with 65 questions for 100 marks, in multiple choice, multiple select and numerical answer formats, with negative marking only for multiple choice. CAT has been a computer-based test of two hours, divided into three sections of forty minutes each, with multiple choice and typed-in answers. The GRE General Test was shortened in September 2023 to about two hours. GATE and CAT are held once a year. GRE can be taken at many times of the year, at a test centre or at home, so the timing is more flexible. Formats change, so read the current brochure or bulletin before planning.

The length of time a score stays valid matters more than students expect, because it decides the order in which you can do things. A GATE score is valid for three years. A CAT score is valid for one year, for the admission cycle that follows the result. GRE scores are reported by ETS for five years, though each programme may set its own limit. If you want to work for a couple of years before studying, a GATE or GRE score can be taken now and used later. A CAT score cannot, so many people who plan an MBA after working take CAT in the year they intend to apply.

Check the eligibility rules as well. According to the official GATE FAQs, students in the third year or beyond of an eligible degree can appear, there is no age limit, and there is no limit on attempts. For CAT, you need a bachelor's degree with a minimum percentage, and final-year students can apply, with admission conditional on the degree being completed. GRE has no formal eligibility, though programmes set their own requirements.

Then check whether you need the exam at all. Many master's programmes abroad have made the GRE optional, and some still require it. A strong score can help an application and a weak one can hurt, so ask each programme what it prefers. Some MTech seats in India, mainly self-financed ones, are open without GATE. Some management programmes accept other tests than CAT, such as XAT, NMAT or CMAT, and some accept GMAT or GRE. The programme's own admission page is the only reliable answer, and it is far better than a coaching centre's summary.

Now you can choose, starting from the plan. If you want an MTech in India, a research career, or the possibility of a public-sector role, GATE is the natural choice. If you want an MBA in India, CAT is the central exam, with one or two others as a backup. If you want a master's abroad, check what your target programmes ask for, then prepare for the GRE only if they need it, and add the English-language test that most programmes require. If you are weighing two routes, the exam calendars overlap, so plan your months around final-year projects.

If you honestly do not know yet, take the exam whose score lasts longest and costs the least in time, and decide later. That usually means keeping GATE or GRE in view rather than CAT. But do not prepare for all three out of anxiety. Each is a serious commitment of months, and preparing for three at half strength usually serves none of them.

When you have picked, go to the official site for the current dates, syllabus, fees and bulletin. Make a calendar that works backwards from the exam. And before you spend, ask yourself the question that comes before every exam: what do I want this to lead to, and is this exam the way there? If you can answer that in a sentence, the preparation will go much better.