The aim of this study was to examine the differences in intentions, attitudes and knowledge of fourth and fifth grade high school students in the city of Zadar on lactation and breastfeeding. 90 respondents participated in the research, of which 52 were female health students and 38 were non-health students. An anonymous online questionnaire was used, consisting of sociodemographic data and questions on intentions, attitudes and knowledge about lactation and breastfeeding. Results of breastfeeding intention indicate that students of the School of Economics agree significantly more with the statement that they would stop breastfeeding as soon as they start working, even if their child continues to ask for breastfeeding (P = 0.001), as well as with the statement that upon return to work they would immediately start feeding milk formula (P = 0,008). The attitudes of the students of the School of Economics show that they agree significantly more with the statements that it is more pleasant to see a mother bottle-feeding a child than a breastfeeding mother (P = 0.008), that breastfeeding negatively affects the mother's ability to work and career (P = 0.008). Health students agree significantly more with the statement that the father should help his partner who is breastfeeding and working (P = 0.005) as well as with the statement that the child's father should use part of the maternity leave to help the mother with breastfeeding and child care (P = 0 ,02). There are no differences in the knowledge about breastfeeding and lactation between students of health and non-health orientation