The theme of this master's thesis is the nutrition status of children in primary education. Today's way of life has not only changed the eating habits of adults but also children's eating habits. Previous research shows that there is a higher number of children who are overweight or have some degree of obesity. The aim of this research is to check the nutritional status of students in primary education, their eating habits and sport activities within their free time. The research was conducted in 9 primary schools in Pula using an anonymous online questionnaire. The obtained results show that there is a difference in nutritional status of Pula's younger children depending on their school age. The differences are related to the respondents' gender and class. The results also show that the male students in the first grade and female students in the second, third and fourth grade are normally fed. Increased value of the body mass index (BMI) was recorded in second, third and fourth grade for male students and for female students in the first grade. The eating habits of the students are partly satisfactory because the students mostly eat before going to school (breakfast) and do not consume carbonated drinks, but for brunch they mostly consume the so-called unhealthy carbohydrates. Furthermore, in their free time, students are largely involved in sports and spend a lot of time in the fresh air.