<![CDATA[ABSTRAK Perilaku Hidup Bersih dan Sehat (PHBS) merupakan salah satu upaya penting dalam membentuk kebiasaan sehat sejak usia sekolah, karena pada tahap ini anak masih berada dalam proses pembentukan kebiasaan yang dapat terbawa hingga dewasa, sementara observasi lapangan di SDN 2 Sukamahi, Kecamatan Sukaratu, Kabupaten Tasikmalaya menunjukkan bahwa lingkungan sekolah masih menghadapi keterbatasan sarana tempat pembuangan sampah, belum tersedianya sarana cuci tangan, banyaknya sampah di dalam kelas khususnya di bawah meja belajar, serta tumbuhan liar yang tidak terawat dan bercampur dengan sampah di lingkungan sekolah. Penelitian ini bertujuan untuk mengetahui pengaruh edukasi PHBS terhadap tingkat pemahaman siswa. Penelitian menggunakan desain pre-experimental dengan rancangan one group pretest-posttest, melibatkan 45 siswa kelas 5 dan 6 yang dipilih menggunakan teknik total sampling, dengan data dianalisis menggunakan uji Paired Sample T-Test dan perhitungan effect size Cohen's d. Hasil penelitian menunjukkan peningkatan proporsi siswa dengan kategori paham dari 93,33% menjadi 95,55% setelah edukasi, namun secara statistik perbedaan tersebut tidak bermakna (p = 0,211; Cohen's d = -0,189, kategori kecil). Meskipun demikian, hasil ini tetap bermakna secara praktis karena menunjukkan bahwa pengetahuan dasar siswa mengenai PHBS sudah cukup baik, dan kegiatan edukasi berperan memperkuat serta mempertahankan pemahaman tersebut, sehingga disarankan agar edukasi PHBS di sekolah dasar tidak hanya berfokus pada peningkatan skor pengetahuan, tetapi juga pada penguatan sikap dan pembiasaan perilaku sehat secara berkelanjutan melalui keteladanan guru, orang tua, dan penyediaan sarana kebersihan yang memadai. Kata Kunci: PHBS, Edukasi Kesehatan, Siswa Sekolah Dasar, Pretest-Posttest, Sanitasi Sekolah. ABSTRACT Clean and Healthy Living Behavior (PHBS) was considered an important effort in shaping healthy habits from school age, since children at this stage were still forming habits that could carry over into adulthood, while field observations at SDN 2 Sukamahi, Sukaratu District, Tasikmalaya Regency revealed that the school environment still faced limited waste disposal facilities, an absence of handwashing facilities, scattered trash inside classrooms particularly under students' desks, and unmaintained wild vegetation mixed with litter around the school grounds. This study aimed to determine the effect of PHBS education on students' level of understanding. The study used a pre-experimental design with a one group pretest-posttest approach, involving 45 fifth- and sixth-grade students who were selected through total sampling, and the data were analyzed using the Paired Sample T-Test along with Cohen's d effect size calculation. The results showed an increase in the proportion of students in the understood category from 93.33% to 95.55% after the education session, although the difference was not statistically significant (p = 0.211; Cohen's d = -0.189, small effect). Nevertheless, the findings remained practically meaningful, as they indicated that students' baseline knowledge of PHBS was already fairly good, and the education activity helped reinforce and sustain that understanding, so that PHBS education in elementary schools was recommended to focus not only on improving knowledge scores but also on strengthening attitudes and fostering sustainable healthy behavior habits through teacher and parental role modeling and the provision of adequate sanitation facilities. Keywords: PHBS, Health Education, Elementary School Students, Pretest-Posttest, School Sanitation.]]>
