Yes, there is one SD Adventist high school in Cairo (called Nile Union Academy), see at http://www.adventistmission.org/article.php?id=121 . "Union" is a level of teritorial Church organization, and Academy is used to mean a high school (private) in Adventist circles.
Highland Adventist School was created in 1988.
Christchurch Adventist School was created in 1925.
Kahili Adventist School was created in 1938.
Cambodia Adventist School was created in 1995.
The motto of Christchurch Adventist School is 'Educating for Eternity'.
The Oaks Adventist Christian School was created in 2003.
Adventist International Mission School was created in 1990.
Epauto Adventist High School was created in 2004.
Kauma Adventist High School was created in 1957.
Keene Adventist Elementary School was created in 1893-01.
Taiwan Adventist International School was created in 2008-08.
Rotorua Seventh-day Adventist School was created in 1953.