Background: The sleeping habits amongst children have changed and bad sleeping habits often have a negative impact on the health. The school nurse have the opportunity to early identify the risk of illness amongst children as well as promoting health and offer support in good sleeping habits. Aim: To describe the school nurse experience of sleeping habits amongst children between the age 10 -16 years. Methods: Nine school nurses from three different municipalities´ were interviewed using semi-structured questions. A qualitative content analysis with an inductive approach was exercised. Results: The school nurse described that the majority of all children generally had good sleeping habits, although they had changed in recent years. They could see a connection between lifestyle, sleep and health. The school nurse worked on identifying children with sleeping disorders and to offer them support. The school nurse experienced that the general knowledge about sleep needed improving amongst both children and guardians´. Through good relationships with children and their guardians´ the school nurse could offer both support and useful tools in the working process. A fluctuation within the school nurses´ health promoting work was discovered and was restricted by the lack of cooperation and time. The majority of the organisations lacked common routines in health promoting work. The school nurses´ had a wish to develop health promotion further to counteract bad sleeping habits and to give the children best possible conditions to stay healthy. Conclusion: The rapid development of our society along with changed lifestyles create challenges and have an impact on children's sleeping habits. Children and their guardians´ need to widen their general knowledge about sleep and health. Extended health promotion work is demanded to be able to meet the requirements needed. A well organised student health with clear described routines and effective cooperation with educators are believed to be a success in health promotion.