We can conclude based on this study that students' food safety knowledge and behaviour varies. Crucial risk areas related to the four C: s – Cooking, Cleaning, Chilling and Cross-contamination (avoiding it) – were identified. Boys reported to be significantly more at risk in terms of food safety in comparison with the girls regarding handling of risk foods, reheating and cleaning. However, as this study reveals that the students' food safety knowledge and behaviour are inadequate and that some of them might leave school without having learnt even basic food safety principles, we suggest that the four C: s need to be highlighted in HCS teaching. Especially for boys who reported seldom cook at home HCS teaching would be extra valuable. The policy documents that regulate what the teachers must include in their teaching need to be changed in order to create risk aware future consumers. This might benefit the individual by reducing food born infections and also reduce society costs.