There is very good selection of international schools in Japan with a wide range of curriculum with a diverse student group. They can be expensive and limited spaces. Kindly research each school and find the right fit for your children. The required time to prepare the documents needed for each school takes time, hence advisable to apply at least 4-6 months in advance. As documents differ for each school, can receive information through their website or calling them directly. It will be wise to get prior school documents from countries they have attended or letters of recommendation. You may need a physical examination and entrance testing. Many of the schools have a minimum English language requirement which are tested by person or by voice/video calls. Besides the English language testing there are interviews for both student and parent.
Indian School
Global Indian International School, Tokyo （ www.giisjapan.org ）
Nishikasai Junior Campus
Ages 2.5-8 yrs. Pre-K Grade 3 / coed
03-5696-7141
Higashikasai High School Campus
Ages 9-17/ Grades 4-12/ coed
03-5676-5081
India International School in Japan （www.iisjapan.com）
Ages 3-18 /K- Grades 12/ coed
03-5875-5435 （Nishi Ojima）
Ages 3-13 yrs./ K- Grade 6/ coed
080-3505-2247 （Yokohama Campus）
French International School
Lycee Francais International de Tokyo （www.lfitokyo.org）
Ages 3-18 years/ coed
03-6823-6580 （Shin-Itabashi）
Ecole Francaise de Saint Maur （www.stmaur.ac.jp）
2.5－18・Pre-k to Grade 5 in French
Grade 6 -12 in English
045-641-5751 （Yokohama ）
L`Ecole du Juste Milieu ( French-Japanese International School )
（info＠lecole-du-justemilieu.com）
Trilingual Nursery Ages 9 months -2
Bilingual pre-and Kindergarten Ages 3-6 years/ coed
Bilingual Elementary Ages 6-11 Grades 1-5
03-5944-5929 （Nishigahara ）
German School
Deutsche Schule in Tokyo Yokohama （www.dsty.jp）
Ages 3-18/ K- Grade 12/ coed
045-941-4841
Chinese School
Tokyo Chinese School Tokyo Chuka Gakko （www.tcs.or.jp）
Ages 7-18 years
03-3261-4992 （Gobancho、Chiyoda ku ）
Yokohama Yamate Chinese School （yycs.jp）
Grade K-12 Languages in Japanese/Chinese and English
045-641-0393
Yokohama Overseas Chinese School Yokohama Chuka Gakuin （yocs＠yocs.jp）
Ages 6-18
045-681-3608
Korean School
Tokyo Korean School Tokyo Kankoku Gakko （tokos.ed.jp）
Ages 6-18
03-3357-6031 （Shinjuku）
British School In Tokyo
British School In Tokyo (bst.ac.jp)
Ages 3-18 / coed
IGCSE and A- Level
Shibuya Campus ( Shibuya )
03-5467-4321
Ages 3-8
Showa Campus ( Setagaya )
03-3411-4211
Ages 9-18
Hiroo Gakuen Junior and Senior High School
03-3444-7272
5-1-14 Minamiazabu, Minato-ku
Ages 13-18 coed
Biligual English/Japanese classes
Geared towards students returning to Japan from abroad