My kids go to international schools which are heads and shoulders above anything the Japanese can provide in terms of an elementary, middle, or high school experience. (couched to allow for the very good math scores of the Japanese school robot product).
Totally legal too.
A reminder that we're talking about gimu
kyoiku here, not gimu
keiken, or whatever is equivalent to the "school experience" you speak of.
Personally, in this day and age, I think it more important to learn stuff than attend a senior prom. Character can be developed outside of the school system.