As such, countries are especially interested in learning more about their own teaching and ECEC workforce, and making comparisons with other countries to develop more effective policies to improve teaching and learning (OECD, 2014b). They may also be called pedagogue, educator, childcare practitioner or pedagogical staff in pre-primary education, while the term teacher is almost universally used at the primary' level. Data sourced from the OECD’s Education at a Glance Indicators exclusively covers this category. Assistants are more common in pre-primary education than in primary education.