BISH, which opened in September 2000, offers education for ages 3 to 18 (UK Nursery to Year 13/US Pre-K to Grade 12).

Each year, the British International School added one additional grade by level, until it covered ages 3 to 18.

[2] John Major, the former Prime Minister of the United Kingdom, attended the school's official opening.

O'Reilly-Askew said that she was not surprised by the increase of interest in the school, since there are a large number of British citizens living in Greater Houston.

Students at the British International School of Houston sit externally graded standardized tests in English, Maths, and Science as recommended by the British National Curriculum (England and Wales) at the end of Years 2, 6 and 9.

[10] In December 2014 the school acquired a 33-acre (13 ha) site in unincorporated Harris County, Texas, in the Greater Katy area,[11] with a capacity of 2,000 students,[12] located at the southwest corner of Franz Road and North Westgreen Boulevard,[13] east of Texas State Highway 99 (Grand Parkway) and north of Interstate 10 (Katy Freeway).

[13] Nord Anglia Education has a collaborative programme with the Juilliard School,[16] and MIT[17] The British International School also offers students the opportunity to participate in the Nord Anglia Global Campus, a programme that links students attending the 43 schools to one another online for activities, challenges, curriculum and expeditions, helping students gain a global perspective.