Isikolo saMazwe ngaMazwe saseBritannia (BIS) liziko lemfundo elingenzi ngeniso elikwiCanadian International Educational Organisation (CIEO) eTshayina. I-BIS ibonelela ngemfundo yeKharityhulam yaMazwe ngaMazwe yaseCambridge kubafundi ababudala buyiminyaka eyi-2.5 ukuya kweli-18.
Ivunyiwe yiCambridge Assessment International Education, iBIS yamkelwa njengeSikolo saMazwe ngaMazwe saseCambridge kwaye ibonelela ngeCambridge IGCSE kunye neziqinisekiso zeNqanaba. Ngaphezu koko, i-BIS izinikele ekubeni sisikolo samazwe ngamazwe esitsha, esizama uku
dala indawo yokufunda ebalaseleyo ye-K12 ngokunika iKharityhulam yaseCambridge, iSTEAM, isiTshayina, kunye nezifundo zobuGcisa.
Emva kweminyaka yokuzibhokoxa, abafundi beSikolo Samazwe Ngamazwe iLanna eThailand baqalisa ukufumana izibonelelo kwizikolo ezidumileyo. Ngeziphumo zabo zovavanyo ezigqwesileyo, batsale umdla kwiiyunivesithi ezininzi ezikumgangatho wehlabathi.