The British International School of Washington (BISW) is a private, nonsectarian, co-educational British school located in the Georgetown neighborhood near the border of the Georgetown and Glover Park neighborhoods[1] in Washington, D.C. BISW educates pupils between the ages of 2 and 18 (UK Pre-Nursery - Year 13 | US Pre-K2 - Grade 12).

BISW was originally founded in September 1998 by Dr. Lesley Stagg.

As of 2019, Nord Anglia operated 66 international schools in 30 countries with over 61,000 students.

[3] BISW leases property from Georgetown University, yet GU's Green Building[4] (the physical BISW school building) was purchased in 2009 by the entity that is now HUB Properties Trust.

[8] IGCSE and IB students take external examinations at the end of years 11 and 13.