Bullying among secondary school students has become one of the most disturbing issues in Nigeria. A variety of bullying behaviour abounds with their attendant negative consequences. This study investigated students’ attitudes towards bullying, environments in which bullying takes place and the extent of their involvement in bullying behaviours. The sample comprised 592 senior secondary students in Owerri metropolis who completed the Attitude to Bullying Rating Scale (ABRS), Checklist on Environments of Bullying (CEB), and Involvement in Bullying Rating Scale (IBRS). The findings indicate that a majority of students (67.57%) exhibited an inappropriate attitude toward bullying. Bullying was found to be prevalent among senior secondary school students in Owerri. Of the total number of students, 57.43% were involved as victims, 68.92% were involved as bullies, while 74.66% were involved as bystanders On the nature of bullying, social bullying ranked highest (82.94%), followed by physical bullying (81.1%) and verbal bullying (64%). With regards to the environments where bullying occurs, the study found that bullying can take place anywhere in the school and outside the school, however, the prominent places include the classroom (without the teacher), school play grounds, corridors, toilet ends, school canteens and on the way home. While a greater number of the male students were involved in physical bullying, more females were involved in verbal bullying. It is recommended that anti-bullying campaign be mounted in the secondary schools.