“Why Is Education Improving? An Economic and Poverty Investigation of Average Length of Schooling in the Context of SDG 4 (Quality Education) in East Java 2015-2024”. Journal of Psychology and Culture Behavior in SDGs, vol. 2, no. 1, Jan. 2026, p. 000114, https://doi.org/10.63230/jopacbis.2.1.114.