All Children Reading: A Grand Challenge for Development (ACR GCD) and the Girls’ Education Challenge (GEC) Fund Manager, funded by the UK Foreign, Commonwealth and Development Office (FCDO), released this technical brief highlighting valuable lessons, insights and recommendations from the experiences of implementers, assessment designers and researchers who included learners with disabilities in standardized learning assessments. The brief aims to promote inclusivity in education and help funders, implementers, and researchers ensure that learning assessments more accurately and reliably measure the learning outcomes of all children, including those with disabilities.