International Schools Group (ISG) | 13,848 followers on LinkedIn. We inspire innovation and compassionate action. | The International Schools Group (ISG) was founded in 1962 to serve the needs of expatriate families living and working in the Kingdom of Saudi Arabia. ISG is a not-for-profit, forward-looking school district comprised of five schools. The schools are co-educational day schools delivering preschool to grade 12 programs for expatriate children and a small number of students from the host country.