ELOM data includes data on the child's school: School setting (province, rural/urban, traditional), school quintile, and school name. Data on each child includes the child's age, home language, height, and child performance scores collected using the Early Learning Outcomes Measure (ELOM) tool developed by the researchers. This tool allows for both direct assessment of children’s performance as well as an assessment of the child’s social and emotional functioning and orientation to tasks. Direct Assessment consists of 23 items measuring indicators of the child’s early development in five domains which are internationally accepted recognised as key learning and developmental areas. These include: Gross motor development, fine motor coordination and visual motor integration, emergent numeracy and mathematics, cognition and executive functioning, and emergent literacy and language. The child's Task Orientation is also rated by the assessor during direct assessment. The child’s capacity for self-care (toileting), relations with peers and adults, and emotional functioning are measured with a Teacher Assessment.