<![CDATA[This community service activity aimed to enhance the knowledge and awareness of students at Bunda Hati Kudus (BHK) Junior High School on helminthiasis prevention. The program was implemented through education on clean and healthy living behaviors (PHBS) and training on proper handwashing based on World Health Organization (WHO) standards. Program effectiveness was assessed using pre- and post-test evaluations. Education was provided to 51 junior high school students of class XI BHK through lectures, discussions, question and answer sessions, case studies, and workshops. Knowledge evaluation was conducted using a questionnaire completed by participants before and after the activity. Data analysis was performed descriptively to determine an overall picture of pre- and post-test data, Fisher's Exact test to identify differences in the proportion of correct answers for each pre- and post-test question, and the Wilcoxon signed-rank test to determine differences in medians between pre- and post-test data overall. Descriptive analysis shows that the proportion of students with a good level of knowledge increased from 72.00% to 96.08%. A significant increase in correct answers was observed in questions 1, 5, 6, and 10 (p<0.05), and overall there was an increase in the median pre- and post-test scores from 8 to 10 (p<0.001). This educational activity successfully increased students' knowledge about the prevention of worm infections and proper handwashing practices. Recommended follow-up actions include extending the duration of the activity, developing more varied educational materials, and implementing a follow-up program to ensure the sustainable application of healthy living behaviors among students.]]>
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