On Wed, 14 Apr 1999, The Eternal Lost Lurker wrote:

1. If you're going to write Ranma fanfics, Ratliff, learn to spell SAOTOME
correctly. Also learn that the series is set in Nerima, which is in Tokyo,
which is in JAPAN, so you DON'T HAVE SCHOOLS NAMED MACARTHUR.

It's always possible that someone (possibly an American) named the school
after Douglas MacArthur in the post-war years.