It mainly depends on which country you study in and what major you study, and there are many other prerequisites. If you take the exam purely for the sake of the exam, I advise you not to take anything!

Even so, I will provide you with "the difference between TOEFL, GRE and IELTS"

Guide to the registration of the four major overseas exams and the introduction of the exams.

TOEFL (English as a Foreign Language Test)

Introduction to the exam: TOEFL is a necessary test score for studying abroad (the United States and Canada). It is organized by Educational Testing Service Centers (ETS) around the world, and it is an English proficiency test for non-native English speakers. More than 2,400 universities and colleges in the United States and Canada recognize the test results and set minimum TOEFL admission scores for applicants.

Registration time: Since 2002, the TOEFL test has been added in September on the basis of four times a year. Except for Beijing (*** 14 test center), registration in other regions adopts centralized online registration (www.5 1test.com), and the registration start time of these test centers is not specified, only the registration deadline is specified. Examination fee: 750 yuan RMB.

Graduate Entrance Examination

Test introduction: GRE is sponsored by ETS. It was jointly organized by Harvard, Yale, Columbia and Princeton universities in the United States for the first time in 1937, and was handed over to ETS, the education examination center, in 1948.

Registration method for candidates in Beijing: Call the registration telephone number 625 1090 1 to obtain the form and the candidate's handbook, fill in the GRE registration form and the GRE supplementary registration form, remit the examination fee according to the designated post office listed in the candidate's handbook, or bring your ID card to any networked China bank nearby to collect and fill in the computerized examination information record form, and pay the examination fee by remittance and transfer, free of charge. After 9 days of payment, you can call the registration center to verify whether the examination fee has arrived. Candidates reserve seats at the registration center. Candidates receive the confirmation letter from the registration center, otherwise they will call the registration number 2-3 working days later. Examination fee: 1 176 RMB (140 USD), online examination fee plus handling fee 12 RMB, and offline bank pays examination fee plus handling fee 12.50 RMB.

International English Language Testing System

Introduction: IELTS, an international English proficiency testing system, is a language testing system for higher education institutions in countries where English is the main teaching language, and is also used to test the English level of people who have settled in English-speaking countries (mainly Commonwealth countries).

Registration time: register at least 2 months before the exam.

Registration procedure: Bring my ID card (temporary id card is not accepted in Beijing test center) and a copy, and fill in the registration form. You can get the registration form at the test center, or download it from beijing language and culture university Foreign Test Center or other IELTS websites. If you apply by mail, please be sure to provide a copy of your signed ID card. If you apply by post, please remit money through the post office. Examination fee: 1 150 RMB.

GMAT (Graduate Management Entrance Examination)

Introduction: GMAT, a foreign MBA entrance examination, is organized by the Entrance Examination Committee of American Business School entrusted by Princeton Education Examination Center (ETS) in New Jersey, USA, and the domestic organizer is China International Examination Coordination Office (CIECB).

Registration time: from 1998 to 1, China changed to computerized examination, instead of fixed four times a year like the previous written examination, you can take this examination three weeks after each month, six days a week, 10 hour a day. Test sites have been set up in Beijing, Shanghai, Guangzhou and Wuhan. Beijing test center is responsible for unified registration procedures, that is, China Foreign Examination Coordination Office is responsible for unification.

Registration procedure: Contact China Foreign Examination Coordination Office and request to send (free) GMAT examination announcement and registration form. Telephone 010-62510901,fax 0 10-625 15002, or download the registration form online (www.5 1test.com). Candidates in Beijing can bring their ID cards to any online China bank to collect and fill in the Computerized Examination Information Record Form to pay the examination fee. You can also register online for the GMAT Computerized Examination Registration Form (www.5 1test.com). You can only choose one of the three ways to fill in the ETS registration form online, mail or fax, and you can't use them together. If you don't receive the notice within 10 working days after remittance, you should check with the examination coordination office and agree on the date, time and place of the examination. Examination fee: 1596 RMB.

In addition, TOEFL and GRE have undergone a makeover this year, and the specific test requirements are not clear. The test will definitely become more and more difficult! Good luck!