<![CDATA[[Bahasa]: Kurangnya kesadaran dan pemahaman masyarakat mengenai permasalahan lingkungan, khususnya terkait ketersediaan air bersih, dapat menghambat upaya penanganan lingkungan secara berkelanjutan. Kegiatan Pengabdian kepada Masyarakat bertema “Psikoedukasi untuk Mengatasi Permasalahan Lingkungan” bertujuan untuk meningkatkan pengetahuan dan pemahaman siswa-siswi SMK PPN Tanjungsari, Jawa Barat, tentang perilaku kooperatif dalam konteks berbagi air bersih. Psikoedukasi dilaksanakan melalui pemaparan materi, diskusi interaktif, dan simulasi, dengan evaluasi yang mengacu pada model Kirkpatrick pada level reaksi dan level pembelajaran. Evaluasi reaksi dilakukan menggunakan skala penilaian kepuasan terhadap kualitas kegiatan, penyampaian dan kejelasan materi, efektivitas metode, fasilitas, kebermanfaatan, serta kecukupan waktu. Evaluasi pembelajaran dilakukan dengan desain satu kelompok pre-test–post-test disertai follow-up, melalui perbandingan skor pengetahuan sebelum kegiatan (pre-test), sesaat setelah kegiatan (post-test pertama), dan satu bulan kemudian (post-test kedua). Hasil evaluasi menunjukkan bahwa peserta merasa puas terhadap pelaksanaan psikoedukasi dan materi yang diberikan. Terdapat peningkatan nilai rata-rata pemahaman terkait perilaku kooperatif dalam pendistribusian air bersih pasca intervensi, di mana tren positif tersebut terus berlanjut hingga tahap pengukuran tindak lanjut (follow-up). Temuan ini mengindikasikan bahwa psikoedukasi berkontribusi dalam memperkuat pemahaman dan berpotensi mendorong praktik perilaku kooperatif berbagi air bersih sebagai bagian dari solusi terhadap permasalahan lingkungan terkait air bersih. Kata Kunci: berbagi air bersih, lingkungan, perilaku kooperatif, psikoedukasi [English]: Lack of public awareness and understanding of environmental issues, particularly those related to the availability of clean water, can hinder efforts to address environmental problems sustainably. The community service program aims to improve students' knowledge and understanding of cooperative behavior in the context of clean water sharing at SMK PPN Tanjungsari, West Java. Psychoeducation was delivered through material presentations, interactive discussions, and simulations, with evaluation based on the Kirkpatrick model at the reaction and learning levels. Reaction evaluation used a satisfaction assessment scale for the quality of the activity, delivery and clarity of the material, effectiveness of the method, facilities, usefulness, and adequacy of time. Learning evaluation was carried out using a one-group pre-test–post-test design with follow-up, comparing knowledge scores before the activity (pre-test), immediately after the activity (first post-test), and one month later (second post-test). The evaluation results showed that participants were satisfied with the implementation of psychoeducation and the materials provided. There was an increase in participants’ average understanding score regarding cooperative behavior in clean water sharing after the intervention, with this positive trend continuing into the follow-up measurement phase. These findings indicate that psychoeducation strengthens understanding and may encourage cooperative behavior in clean water sharing as part of the solution to environmental problems related to clean water. Keywords: clean water sharing, cooperative behavior, environment, psychoeducation, water]]>
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