BBS was established in 1982 by Dr. May Al Otaibi and Mrs. Kathleen Acher Kaiksow in response to the perceived need for a bilingual national school on the island of Bahrain. In its first year, the school served students from nursery to Kindergarten with only 40 students enrolled.The school witnessed a growth in enrollment every year, which lead to a gradual expansion of curriculum and grade levels. In 1986, to accommodate the increasing enrollment, BBS relocated to its present site at the educational district in Isa Town, which was a land granted by the late Amir of Bahrain His Highness Sheikh Isa bin Salman Al Khalifa. Over the years, Bahrain Bayan School continued working on providing highly exceptional education in all of its grades. As evidence of this, the school introduced its first batch of senior students, with college preparatory courses such as the International Baccalaureate program and American Diploma to its high school students. This was a significant mark in the history of Bayan School.
In 1995 BBS gained accredation for Preschool to Grade 12. During the same year the school graduated its first senior class .
The vision of Bahrain Bayan School is to build a well-rounded environment, by providing a strong academic educational platform and multifunctional recreational facilities. In line with this vision, the school currently has a self-contained campus consisting of the following facilities: buildings dedicated to the following sections. pre-school, primary school, middle school, high school, administration, library, and cafeteria. It also includes a gymnasium/multi-purpose building, Mohammed Al Zamil Hall, which was built in 2001 and contains a 600-seat theater, two full-size basketball courts, two squash courts, an aerobic dance studio, weight training and fitness center.
Also, through grateful donations the school was able to build a modern running track, in 2011 donated by Batelco Telecommunications, with the support of the school's Board of Trustees and Parent Teacher Association.
From a generous donation by Dr. May and Ms.Haifa Al Otaibi; the Al Otaibi Building was completed in 2012. This year also marked the opening of the Bayan school Mosk a central and vital addition to the Bayan community.
September 2016 marks the date of the school’s opening of its state of the art science building which includes multiple labs for physics chemistry, and biology and houses the first dedicated robotics lab in the Kingdom.