Early childhood education (ECE; also nursery education) is a branch of education theory which relates to the teaching of children(formally and informally) from birth up to the age of eight which is traditionally about third grade. It emerged as a field of study during the Enlightenment, particularly in European countries with high literacy rates.[3] It continued to grow through the nineteenth century as universal primary education became a norm in the Western world. In recent years, early childhood education has become a prevalent public policy issue, as municipal, state, and federal lawmakers consider funding for preschool and pre-K. It is described as an important period in a child's development. It refers to the development of a child's personality. ECE is also a professional designation earned through a post-secondary education program.