The article states the conditions and manner of attaining entitlement to health insurance of children, with special focus on regular pupils and students, and the deadlines for registration for obligatory health insurance after the regular schooling completion, then the possibilities of health insurance for persons at schooling abroad, the manner of insuring persons who lost the status of a regular pupil and student, and obligations with regard to the registration of pupils and students for the risk of occupational accident and illnesses during the compulsory internship, as well as in case of work of pupils and employers via an agent.