Standards of Excellence

BSO PENTA International

PENTA International is one of the leading independent inspectorates of British Schools Overseas, accredited by the British Government’s Department for Education (DfE), providing training, consultancy and inspection services in the United Kingdom and overseas.

The standards achieved by students at BISL are excellent. An outstanding curriculum, excellent teaching and high-quality attention to students’ care lead to high standards across the school.

PENTA International Inspection Report2021

COBIS - The Council of British International Schools

COBIS serves British International Schools around the globe, representing over 281 Member Schools in 79 countries and over 209 Supporting Member organisations.

Cambridge Assessment International Education

Cambridge qualifications are accredited and valued by many leading universities and employers around the world.


AQA is one of the largest awarding bodies in the UK, offering specifications and examinations in various subjects at GCSE, AS and A Level and other vocational qualifications.

ALFRI logo

Bell Foundation Accreditation

The Bell Foundation is a charity which aims to overcome exclusion through language education by working with partners on innovation, research, training and practical interventions. It accredits regional Centres of Expertise in the UK to build sustainable provision for learners who use English as an Additional Language (EAL) and offers Language for Results International, a high-quality suite of training, tools, resources and accreditation for international schools underpinned by the latest research and designed with learner impact at the forefront.

The Duke of Edinburgh's International Award (MEPI)

The DofE International Award, known as MEPI in Slovenia, is a universal, world-renowned programme for young people to have fun, make friends, improve their self-esteem and build confidence whilst they work towards Bronze, Silver and Gold awards.