Studying in Japan requires TOEFL scores, and Japan only recognizes TOEFL, not IELTS and GRE.
Most students studying in Japan need to take JLPT or J-TEST, and the TOEFL scores of studying in Japan can be used as reference materials for English test auxiliary institutions. JLPT is divided into 1-5 grades, with the highest grade being 1 and the lowest grade being 4. You can apply for a Japanese language school. The J-TEST exam is divided into A-F grades, with the highest grade being A and the lowest grade being F grade.
High school education needs Japanese E-level and university education F-level to study in Japanese language schools. The minimum requirement for reading college Japanese directly is Level 2. Some schools will offer some courses in English for students with low Japanese level. TOEFL is the most widely used. There are not as many schools recognized by TOEFL and IELTS as TOEFL, and GRE is rarely recognized.
Generally speaking, key countries, public universities and first-class private universities in Japan require students to have English scores, and TOEFL scores must be above 80%. Famous universities such as Tokyo University, Kyoto University, Waseda University and Keio University require students to score above 85 in TOEFL.
It should be noted that IELTS is still not recognized in most institutions in Japan, and it is generally based on TOEFL and TOEFL scores. Universities have different requirements for TOEFL scores. Grades are very important.
Moreover, the better the university, the higher the requirements. Generally, the TOEFL score of ordinary colleges and universities is 70-80, and the requirements of key national universities such as Tokyo University and Kyoto University and top private universities such as Waseda University are all around 90.