The aim is to include 4 cities, 21 schools, 14 doctors and 1050 pupils from Southern Finland. From each doctor the aim is to get 25 students from both grades 1 and 5 (at ages 7 and 11) from 1-2 schools. Before the school doctor's check-up, the parents, nurses and teachers fill a questionnaire to identify any potential concerns about each student. The questions were partly chosen from the Strengths and Difficulties Questionnaire (SDQ). Additional questions concerning the student's growth, physical well-being, learning, school absenteeism and the well-being of the whole family are included. The doctor is blinded to the answers of the questionnaires. After the health check the doctor fills an electronic report including any instructions given, significant discussions and follow-up plans and his/her estimate of the benefit of the medical appointment. The student and the parent fill patient-reported experience measure (PREM) forms where they evaluate the benefit of the health check. The researchers compare the need for a doctor's appointment to the benefit gained. At one year after the check-up, the implementations of the follow-up plans are analyzed.