Descriptions of six child-centered, community-owned, replicable, and sustainable approaches to early education and teacher training in poor communities: the Montessori method in Haiti, the Community-Based Mother-Child Day Care Center Services (MCDCCS) in Uganda, the preschool programs of Service Volunteered for All (SERVOL) in Trinidad and Tobago, the Madrasa Resource Centers (MRC) in East Africa, the Improving Pre-and Primary Education (IPPS) in Pakistan, and the Step by Step program in several formerly communist countries