Usually expatriate families will live for 2-5 years in Tokyo. In Tokyo are various international education institutions starting from kindergarten up to International High Schools.
Internationals schools more
For Higher Education
, public or private universities can be attended. Depending on the type of study and duration there are plenty opportunities. But many regular universities expect fluent Japanese skills and entrance exams.
To gain a first overview, the following website provided by JASSO might help: Gateway to Study in Japan