ICAS and IAIS are the same. International Assessments for Indian Schools (IAIS) is a leading international student assessment service that provides an objective, in-depth, external assessment of student skills in key learning areas important for school success and beyond. International Competitions and Assessments for Schools (ICAS) was better known as International Assessments for Indian Schools (IAIS) in India. It has a partnership between Macmillan Education and EEA.