There is a learning crisis. Fifty-three per cent of children in low- and middle-income countries are in ‘learning poverty’, i.e. they cannot read and understand a simple text by the end of primary school age. In sub- Saharan Africa, the learning poverty rate is 87 per cent overall, and ranges from 40 per cent to as high as 99 per cent in the 21 countries with available data. Teachers attending lessons and spending quality time on task is a critical prerequisite to learning. However, in sub-Saharan Africa, teacher absenteeism ranges from 15 to 45 per cent. Teacher absenteeism and reduced time on task wastes valuable financial resources, short-changes students and is one of the most cumbersome obstacles on the path toward the education Sustainable Development Goal and to the related vision of the new UNICEF education strategy: Every Child Learns. Whilst the stark numbers are available to study, and despite teacher absenteeism being a foremost challenge for education systems in Africa, the evidence base on how policies and practices can influence teacher attendance remains scant. Time to Teach (TTT) is a research initiative that looks at primary school teacher attendance in eight countries and territories in the Eastern and Southern Africa (ESA) region: the Comoros; Kenya; Rwanda, Puntland, State of Somalia; South Sudan; the United Republic of Tanzania, mainland; the United Republic of Tanzania, Zanzibar; and Uganda. Its primary objective is to identify factors affecting the various forms of teacher attendance, which include being at school, being punctual, being in the classroom, and teaching when in the classroom, and use this evidence to inform the design and implementation of teacher policies.