Certificate examination of parenting sister-in-law in kindergarten teacher training school Nurse certificate is not a national unified examination item, but an examination organized by provincial vocational skill appraisal institutions. If you get the certificate, you can register in a regular preschool teacher training school authorized by the provincial human resources and social departments. The school will organize training and apply for the certificate. Regular kindergarten teacher training schools will have school licenses. Sister-in-law, that is, a baby nurse, is a person who has comprehensive knowledge of life nursing, nursing, scientific education and conservation, and uses scientific methods to educate and train babies in diet, sleep, sports skills, early education, intellectual development, social behavior and personality development. The work of the parenting sister-in-law includes assisting breastfeeding, mixing milk powder, adding complementary food to the baby, cooking nutritious children's meals, taking the child to sleep, cleaning the baby's clothes and tableware, and cleaning the room.