Calabria E. Exploring the Impact of Double-Shift and Single-Shift Classes on Academic Progress and Well-Being of Grade I Pupils: An Action Research Study. IJERIP [Internet]. 2026 Jun. 1 [cited 2026 Jun. 3];2(6):123-31. Available from: https://ijerip.erio.org.ph/index.php/articles/article/view/846