Asthma is the most common chronic disease of childhood. Its incidence is the highest in primary school children and it is the principal cause of school absenteeism. Prevalence of childhood asthma in India is increasing day by day. It is important for teachers and staff to be aware of the symptoms, triggers and the management of asthma in the school environment. School teacher could be a useful source of health information for students, but they themselves would have to possess adequate and accurate knowledge regarding asthma. The study revealed that the existing knowledge of teachers on asthma among school children is moderate but practices are very low. The enhancement in both knowledge and practice is very much required. This research study is useful to read by health personnel's, teachers, doctors, nurses and school administrators, health administrators, persons involved in care of sick children for gaining the knowledge on issue and better handling & management of children with asthma.