Background: Efficient classroom management and adequate discipline are major issues for teachers in schools worldwide, with the guiding of students' behaviour as one of the primary challenges. Teachers' knowledge, skills, attitudes and behaviour play central roles in the appropriate handling of classroom disturbances. Purpose: The purpose of this study is to explore how practising teachers perceive classroom disturbances and to compare their views to those presented in the literature. By clarifying typical perceptions, this research is intended to give individual teachers tools to develop their insights by comparing their perceptions with those of other teachers. Sample: The empirical material was collected by interviewing 14 home economics teachers in Finland. Home economics is a school subject that involves individual and group work as well as theoretical and practical work. In Finland, home economics is a compulsory subject for students aged 13-15 years, which are challenging ages in regard to classroom management. Design and methods: The empirical research was completed via deep, qualitative theme interviews for data gathering and phenomenography for analysis. Results: The analysis identified five dimensions in which interviewees expressed varying views of classroom disturbances: "who or what disturbs," "whose work is disturbed," "why students disturb," "who is responsible" and "how to prevent classroom disturbances." Based on the various perceptions within each dimension, the main perceptions for understanding classroom disturbances can be condensed into four categories: "unavoidable nuisance," "deficient resources," the "matter of atmosphere" and "educational task." Conclusions: Teachers who wish to develop their classroom management skills may use these findings as tools to compare their perceptions with those of other teachers. This knowledge may also be useful for developing teacher education.