ISL was established 1963 in the Lusaka Showgrounds, close to its present location. From a small beginning ISL has grown into one of the largest international schools in Africa with a student population of around 650, supported by over 60 educators.

CIS-NEASC School Evaluation and Accreditation is an evaluation process that drives a school’s continuous improvement through rigorous evaluation against internationally agreed standards, a blend of support and challenge, and a focus on school development. The accreditation process is based on a peer-based model that brings together international educators from across the world of CIS and NEASC accredited schools. ISL has been accredited since 1997 and was re-accredited for 10 years by CIS in May 2017. To find out more about the accreditation process, visit CIS Accreditation.

ISL is affiliated with the following organisations.

International Bacclaureate

ISL is an International Baccalaureate World School, authorized to offer both the IB Primary Years Programme (IBPYP) and the IB Diploma Programme (IBDP).

International General Certificate of Secondary Education

ISL is an official centre for IGCSE with Cambridge International Exams.
International Middle Years Curriculum

ISL offers the IMYC in Years 7-9. The IMYC provides a rigorous academic platform preparing students well for their next stage of learning.
Council of International Schools

ISL is fully accredited by the Council of International Schools, an organisation that works collaboratively to shape international education through professional services to schools, higher education institutions and individuals.

New England Association of Schools and Colleges

ISL is fully accredited by the New England Association of Schools and
Colleges, which has been working to establish and maintain high standards
for all levels of education since its foundation in 1885.

Independent Schools Association in Zambia

ISL is a founding member of the Independent Schools Association in Zambia, an organisation that seeks to a build a public-spirited community of diverse independent schools in Zambia.
Pamoja Education

ISL takes advantage of the services provided by Pamoja Education, who offer online International Baccalaureate Diploma Programme courses that allow schools to expand their curriculum.