Shyness may play a significant role in children's socio-emotional and cognitive competence in the classroom. This qualitative study investigated elementary school teachers' perceptions of the concept of shyness in their students. In particular, we explored teachers' perceptions regarding the role that gender plays in shy children's behaviours, and their suggestions for educational strategies for shy girls and boys to improve their socio-communicative competence and socio-emotional literacy. Twelve elementary school teachers (10 female, 2 male) participated in interviews about their thoughts/beliefs and feelings/attitudes regarding their experiences with shy girls and boys in the classroom. Overall, findings point to differences in teachers' perceptions of shyness in boys and girls in the classroom, and suggest that some teachers perceive that shyness may be particularly problematic for boys. Findings are discussed in terms of inclusive and holistic educational programs that promote emotional and social competence among all children.