ABSTRACT The low level of knowledge of posyandu cadres on early detection of stunting led to efforts to hold educational activities. This study aimed to evaluate the impact of educational activities on the knowledge of Posyandu cadres regarding early detection of stunting based on Child Anthropometric Standards in PERMENKES No. 2 of 2020, which is implemented nationally. The study employed a within-group experimental design, with 32 respondents who were cadres of the Harjamekar Posyandu within the working area of the Mekarmukti Cikarang Utara Health Center. The research instrument used was a g-form questionnaire, and a nonprobability sampling technique was utilized. Data normality was assessed using the Shapiro-Wilk test, indicating that the data were not normally distributed (p < 0.05). The analysis was conducted using the Wilcoxon Sign Rank Test, which revealed a significant improvement in respondents' knowledge before and after education (p < 0.001, p < 0.05). Keywords: Cadres, Posyandu, Health Center, Education, Stunting, Early Detection ABSTRAK Rendahnya pengetahuan kader posyandu terhadap deteksi dini stunting memunculkan upaya diadakannya suatu kegiatan edukasi. Penelitian ini bertujuan untuk mengevaluasi pengaruh kegiatan edukasi terhadap pengetahuan kader Posyandu tentang deteksi dini stunting berdasarkan Standar Antropometri Anak dalam PERMENKES No. 2 Tahun 2020 yang diterapkan secara nasional. Penelitian ini menggunakan within-group experimental design, dengan 32 responden yang merupakan kader Posyandu Harjamekar di wilayah kerja Puskesmas Mekarmukti Cikarang Utara. Instrumen penelitian yang digunakan adalah kuesioner g-form dengan teknik nonprobability sampling. Normalitas data dinilai menggunakan uji Shapiro-Wilk yang menunjukkan bahwa data tidak terdistribusi secara normal (p <0.05). Analisis dilakukan dengan uji Wilcoxon Sign Rank Test yang menunjukkan adanya peningkatan yang signifikan pada pengetahuan responden sebelum dan sesudah edukasi (p < 0.001, p < 0.05). Kata Kunci: Kader, Posyandu, Puskesmas, Edukasi, Stunting, Deteksi Dini