Enrolment is increasing in all regions of the world but still varies widely between and within regions. In Central and Eastern Europe, and Latin America and the Caribbean, enrolment is high due to a historically strong public education sector. In Central Asia, the Arab States and sub-Saharan Africa, enrolment rates are very low, although there are some intra-regional variations. Even in regions with better coverage, the inclusion of marginalized populations is still a challenge. In the Arab States, private providers cover almost half of all enrolment and in Africa around 60 percent. In Kenya, for example, the government programmes target children aged 4 to 5 years, even though the policy framework identifies children within the 0 to 5 age range as intended beneficiaries.