Students from the Aljezur International School achieved a 100% pass rate in their Cambridge IGCSE exams this year.
Of the exams taken, 20% were graded at either A* or A level with 89% between A* and C grades.
While pupils at the school took examinations this summer, those wishing to take IGCSE, AS or A level exams independently can sit exams at the school in November 2011 or June 2012.