Approximately half of all out-of-school children in emergencies, or about 36 million, are concentrated in only eight countries: Ethiopia, Pakistan, Afghanistan, Sudan, DR Congo, Myanmar, Mali, and Nigeria. About two-thirds of crisis-affected children and out-of-school children are concentrated in the most severe crises (i.e., those where the INFORM Severity Index reached a value of at least 4 in the last three years).