The present study aimed to evaluate knowledge and practices of school children and teachers
regarding musculoskeletal problems. Design: A quasi experimental design was used. Setting: This
study was carried out at two preparatory schools, Al Kholfaa Al Rashdean, and Al Shahid Ahmad
Hamdy in El-Massera district, Helwan, Cairo Governorate. Sample: A stratified multi-stage cluster
random sample was used for selection of 253 school children and all teachers in both selected
schools who constitute 145 teachers. Data were collected through two main tools: I-An
interviewing questionnaire to assess general characteristics of school children and teachers, school
children weight, and history of musculoskeletal problems, school children and teachers' knowledge
regarding musculoskeletal problems. II-Observational checklist to assess practice of school children
and teachers regarding to school bag weight, lifting, carrying and favorable postures techniques
during standing and sitting. Results of this study showed that there was highly statistically
significant difference between pre, post and follow up after two months of implementation of an
educational intervention on school children and teachers' knowledge and health practices regarding
musculoskeletal problems and its' prevention. Conclusion: An educational intervention is
positively improved school children and teachers' knowledge and health practices regarding
musculoskeletal problems among school children. Recommendation: Dissemination of an
educational intervention improves school children and teachers' knowledge and health practices
regarding musculoskeletal problems