Ekkarat W, Charoenkul N. NEEDS OF SECONDARY SCHOOL DEVELOPMENT FOR TEACHING EFFECTIVENESS BASED ON THE CONCEPT OF STUDENT GROWTH. JEI [internet]. 2023 Apr. 19 [cited 2026 Oct. 4];25(2):65-74. available from: https://so06.tci-thaijo.org/index.php/edujournal_nu/article/view/251071