This article has some information about school cancelations in Kumamoto for tomorrow the 10th (Thursday):
Kumamoto City: All 8 city-run kindergartens, all 94 elementary schools, all 42 junior high schools. The article doesn’t seem to say anything about high schools in Kumamoto City.
Areas in Kumamoto Prefecture outside of Kumamoto City: 145 elementary schools, 59 junior high schools, Kami Amakusa High School, 14 special education schools (for children with special needs).
I think there will be quite a few more cancelations. I can report that my own university, Kumamoto Gakuen University, has canceled all classes for tomorrow. I do not know what decision other universities and high schools in Kumamoto have made or will announce soon.
http://www.yomiuri.co.jp/local/kumamoto/news/20140708-OYTNT50165.html
県教委は8日、熊本市以外の公立の小学校145校と中学校59校、県立上天草高校、県立特別支援学校14校が10日に休校すると発表した。上天草高校と県立特別支援学校2校は9日も休校する。熊本市教委も市立の全幼稚園8園、全小学校94校、全中学校42校を10日は休校とすることを決めた。9日は各園長や学校長の判断で早めの下校といった措置をとる。