The school is consistently ranked as one of the premier educational institutions in Sierra Leone.
The school was informally established in Bo, Sierra Leone in 1961 when Bertha Conton started giving lessons to children on the veranda of her home.
The school later transferred operations to Freetown, Sierra Leone and was formally established in 1963.
The school developed and uses an ultra-modern school curriculum that incorporates elements of the child-centered Montessori method of education or the Montessori philosophy for early year students in addition to computer based instruction, with a variable based learning style methodology geared towards self-directed scholarship by students.
By 1992, Bertha Conton privately financed and built the current campus at King Harman Road with a computer lab and an assembly hall.