Sexual objectification can be defined as an imprecise cognitive process which produces inaccurate evaluations according to gender. Moreover, sexual objectification restricts evaluation to a single aspect of people: appearance (Langton in "Future Philos" 285-303, 2004; Langton in "Sexual solipsism: philosophical essays on pornography and objectification," Oxford University Press, Oxford, 2009). So far, no studies have assessed the impact of sexual objectification on teachers' perceptions and evaluations of students. The present study was aimed at investigating the impact of gender and sexual objectification in the domain of education. Specifically, we examined whether gender and objectification changed how teachers perceived and evaluated students. The sample comprised 164 female teachers ages 32-70 years (mean 48.3 ± 7.5) from randomly selected middle schools in Sardinia, Italy. Statistical analysis revealed that teachers ascribed more behaviours that precluded learning to students who were sexually objectified than students who were not sexually objectified. This effect was not dependent on students' gender. Teachers should acknowledge the important role of sexual objectification in student assessment and be informed of best practices to reduce the negative outcomes of sexual objectification and self-objectification in adolescents.