<![CDATA[Basic education is a crucial foundation for the quality of student learning, but cross-national literature indicates that educational success is determined more by consistent implementation and a teacher support ecosystem than simply by the completeness of curriculum documents. This study aims to compare the characteristics, philosophies, and success factors of basic education curricula in Indonesia, Singapore, and Japan, with a focus on their impact on learning quality. Using the Systematic Literature Review (SLR) method with the PRISMA protocol, this study examined 20 selected journal articles from 2015–2025 that had passed due diligence and quality assessment. Thematic analysis grouped the findings into aspects of curriculum orientation, teacher development, character internalization, and technology integration. The synthesis revealed that Singapore implements curriculum efficiency by reducing content breadth for the sake of conceptual depth, supported by research-based teacher development. Japan maintains quality through the internalization of culturally ingrained moral values ??and the improvement of collaborative teaching through lesson study. Meanwhile, Indonesia has an adaptive curriculum policy design but faces the challenge of inconsistent implementation due to the high administrative burden on teachers and resource gaps. The main conclusion emphasizes that the effectiveness of the curriculum is highly dependent on a support system that is able to maintain the teacher's pedagogical space and regular evaluation of learning experiences at the classroom level, not just on changes to formal documents. ABSTRAK Pendidikan dasar merupakan fondasi krusial bagi mutu pembelajaran siswa, namun literatur lintas negara mengindikasikan bahwa keberhasilan pendidikan lebih ditentukan oleh konsistensi implementasi dan ekosistem pendukung guru daripada sekadar kelengkapan dokumen kurikulum semata. Penelitian ini bertujuan mengkomparasikan karakteristik, filosofi, serta faktor keberhasilan kurikulum pendidikan dasar di Indonesia, Singapura, dan Jepang, dengan fokus pada dampaknya terhadap kualitas pembelajaran. Menggunakan metode Systematic Literature Review (SLR) dengan protokol PRISMA, kajian ini menelaah 20 artikel jurnal terpilih dari rentang tahun 2015–2025 yang telah lolos uji kelayakan dan penilaian kualitas. Analisis tematik mengelompokkan temuan ke dalam aspek orientasi kurikulum, pembinaan guru, internalisasi karakter, dan integrasi teknologi. Hasil sintesis mengungkapkan bahwa Singapura menerapkan efisiensi kurikulum dengan mereduksi keluasan konten demi kedalaman pemahaman konsep, didukung oleh pembinaan guru berbasis riset. Jepang memelihara mutu melalui internalisasi nilai moral yang membudaya serta perbaikan pengajaran kolaboratif melalui lesson study. Sementara itu, Indonesia memiliki desain kebijakan kurikulum yang adaptif namun menghadapi tantangan inkonsistensi implementasi akibat tingginya beban administratif guru dan kesenjangan sumber daya. Simpulan utama menegaskan bahwa efektivitas kurikulum sangat bergantung pada sistem pendukung yang mampu menjaga ruang pedagogis guru serta evaluasi pengalaman belajar secara berkala di tingkat kelas, bukan hanya pada perubahan dokumen formal. ]]>
