Chickenpox disease is one of a highly infectious disease caused by the virus called varicella zoster .Chickenpox is spread through coughing and sneezing, and through direct contact with fluids in rashes. Most people who are vulnerable to chickenpox are children, especially those under 12 years old. Objectives: The study aim determine the effective of education programs on teachers' knowledge toward children with of chickenpox disease at Primary schools in Al-Najaf governorate and the

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... p between teachers' knowledge with their demographic variables. Methodology: A quasi experimental studies was carried out at Primary schools in Al-Najaf governorate from January 2019, to the end of April 2020, the sample was collected in a purposive random sample comprised with 12 schools, identified the number of teachers selected from each school was 45, the data were collected using a questionnaire consisting of two main parts, the first part related to the social and demographic characteristics of teachers, and the second part concerned teachers' knowledge about the prevention of chickenpox and then an educational program was established to increase the awareness and knowledge of teachers towards the prevention of chickenpox. Results: The results showed that most of the samples (37.8%) were aged between (41-50) years. For the number of years of service, the greatest percentage (35.6%) of the sample ranged from 1 to 10 years, the study also showed that 100% of the questions were answered by the teachers after the impact of the educational program. Conclusion: The study concludes that the effectiveness of an education program toward teacher's knowledge, which is concerned with chickenpox, is positive at a high rate.