sentences:  With over 500 accredited members (about 60 outside of the US), AACSB is the oldest (1916).In 2015, Antwerp Management School obtained the AMBA accreditation for their Executive MBA in association with IBS.The Antwerp Management School master trainings have been accredited by the Dutch-Flemish Accreditation Organisation (NVAO) on the basis of the AACSB- accreditation.