For info on schools in Bahrain look at:
http://www.studyinbahrain.com/by_curr.htm
There are two British schools in Bahrain, I would advise getting kids on the waiting list as soon as possible.
St. Christophers is a "non profit international school":
http://www.st-chris.net/
Alternatively the British School of Bahrain:
http://www.britschlbahrain.com.bh/
Both sites give details of fees.
TAF