This is a bit dated, but since these programs tend to repeat from year to year, this may be helpful.

From: Mike Bassett mbassett@senri.ed.jp
Subject: Special programs at OIS
Date: Wed, 30 Jan 2002 09:21:21 +0900

Dear Cornelia,
Thanks for your interest in our programs. We do have 3 programs every year; our year long Saturday School, a 7 day spring program (March 25th-31st) with a magic theme this year and 2 two-week summer programs (July 22nd-August 2nd and August 5th-August 16th) with a world culture theme. Our dormitory is not available to house students but the program is open to anyone who is interested. We generally have classes for native speakers and returnees as well. If I could ask you what your interest in our program is I might be better able to answer your questions. Feel free to contact me at any time.

Best regards,
Mike Bassett, Educational Director of Special Programs
Osaka International School