<![CDATA[Abstract. This study examines the influence of the ODOA (One Day One Ayat) Program-a daily Qur'anic memorization habit integrated with the Ummi Method-on students' Qur'anic memorization competence at SMP Ibnu Sina Bandung. Although the program has been implemented routinely, its measurable contribution to memorization outcomes at the junior-secondary level had not previously been evaluated empirically. A quantitative ex post facto design was used, strengthened by data triangulation from a Likert-scale questionnaire, direct memorization tests, non-participatory observation, and semi-structured interviews. Ninety-two students were selected through proportionate stratified random sampling from a population of 120. Data were analyzed using descriptive statistics, the Kolmogorov-Smirnov normality test, a linearity test, Pearson product-moment correlation, simple linear regression, and Cohen's f² effect size. Results indicate that the ODOA Program falls into the moderate category (mean = 34.07 of an ideal 80, or 42.59%), while memorization competence falls into the moderate-to-high category (mean = 66.36 of an ideal 120, or 55.30%). A strong, positive, and statistically significant relationship was found between the two variables (r = 0.6453; t = 8.0146 > t-table; Ŷ = 25.18 + 1.21X), with the program explaining 41.65% of the variance in memorization competence (r² = 0.4165) and yielding a large practical effect (Cohen's f² = 0.7137). Triangulated data confirmed these findings: students at the Tajwid-Turjuman level retained 89.50% of their memorization after one month, compared with 73.25% among the Jilid-Ghorib group. These findings suggest that consistency-based memorization habits, when paired with a structured reading-quality framework, meaningfully strengthen students' Qur'anic memorization competence. Abstrak. Penelitian ini mengkaji pengaruh Program ODOA (One Day One Ayat)-pembiasaan menghafal Al-Qur'an harian yang diintegrasikan dengan Metode Ummi-terhadap kompetensi tahfidz Al-Qur'an siswa SMP Ibnu Sina Bandung. Meskipun program ini telah berjalan secara rutin, kontribusinya terhadap capaian hafalan siswa belum pernah dievaluasi secara empiris dan terukur. Penelitian menggunakan pendekatan kuantitatif dengan desain ex post facto, diperkuat triangulasi data dari angket skala Likert, tes hafalan langsung, observasi non-partisipatif, dan wawancara semi-terstruktur. Sebanyak 92 siswa dipilih melalui proportionate stratified random sampling dari populasi 120 siswa. Data dianalisis menggunakan statistik deskriptif, uji normalitas Kolmogorov-Smirnov, uji linearitas, korelasi Product Moment Pearson, regresi linier sederhana, dan effect size Cohen's f². Hasil menunjukkan Program ODOA berada pada kategori sedang (rata-rata 34,07 dari skor ideal 80 atau 42,59%), sedangkan kompetensi tahfidz siswa berada pada kategori sedang hingga tinggi (rata-rata 66,36 dari skor ideal 120 atau 55,30%). Ditemukan hubungan yang kuat, positif, dan signifikan antara kedua variabel (r = 0,6453; t = 8,0146 > t-tabel; Ŷ = 25,18 + 1,21X), dengan Program ODOA menjelaskan 41,65% variansi kompetensi tahfidz (r² = 0,4165) serta memberikan efek praktis yang besar (Cohen's f² = 0,7137). Verifikasi triangulasi mengonfirmasi temuan ini: siswa level Tajwid-Turjuman mempertahankan 89,50% hafalannya setelah satu bulan, dibandingkan 73,25% pada kelompok Jilid-Ghorib. Temuan ini menunjukkan bahwa kebiasaan menghafal berbasis konsistensi, jika dipadukan dengan kerangka mutu bacaan yang terstruktur, secara bermakna memperkuat kompetensi tahfidz Al-Qur'an siswa.]]>
