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 b they may also be called pedagogue educator childcare practitioner or pedagogical staff in preprimary 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 preprimary education than in primary education