Ilyassov D, Serikbayeva S, Ryskulova M, Kuttybaeva N. Improvement of the state regulation policy in the field of secondary education of Kazakhstan according to PISA 2015 data of students’ well-being. EC [Internet]. 2023 Dec. 30 [cited 2025 Dec. 7];112(4):229-36. Available from: https://bbr.buketov.edu.kz/economy-vestnik/article/view/724