Usia siswa SMP berada pada tahap perkembangan remaja yang berisiko mengalami masalah kesehatan. Penelitian ini bertujuan mendapatkan gambaran persepsi siswa SMP dalam menerapkan PHBS di sekolah. Pendekatan fenomenologi deskriptif digunakan dalam penelitian. Enam tema yang teridentifikasi yaitu perilaku mendukung penerapan PHBS, kurang peduli terhadap penerapan PHBS, penerapan prinsip dasar PHBS, faktor penghambat pembentukan PHBS, faktor pendukung pembentukan PHBS, dan harapan siswa dan guru untuk terlaksananya PHBS. Pembinaan guru UKS, pendidikan kesehatan kepada guru sekolah, integrasi PHBS dalam kurikulum, pembentukan peer group remaja direkomendasikan dilakukan di sekolah. Penelitian selanjutnya direkomendasikan untuk melakukan observasi keterampilan siswa menerapkan PHBS.
The junior high school students have risks on health problems. This study aimed to portrait junior high school students? perception in applying clean and healthy behavior (CHB). A descriptive phenomenological approach was applied. Six themes were identified: supporting behavior on CHB, low concern about CHB, applying basic principles of CHB, inhibiting and supporting factors on the CHB formation, and the students and teachers expectation for implementing CHB. It is recommended to conduct school health teacher coaching, teachers? health education, integration of CHB in school curriculum, establishment of peer group in school besides observing students? skill applying CHB for future study.