Şahin, S., Türkoğlu Özdemir, S., & Özdemir, G. (2026). DEVELOPMENT AND VALIDATION OF THE PSYCHOMETRIC PROPERTIES OF THE SCHOOL LEADERSHIP PRACTICES SCALE (SLPS). Problems of Education in the 21st Century, Problems of Education in the 21st Century, 84(2), Continuous. presented at the April/2026. doi:https://doi.org/10.33225/pec/26.84.327

Olarte, J. V., Fetalvero, E. G., & Blancia, G. V. V. (2024). CONSENSUS CLASSROOM CLIMATE INVENTORY: SCALE DEVELOPMENT AND VALIDATION. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 82(5), Continuous. presented at the October/2024. doi:https://doi.org/10.33225/pec/24.82.708

Gül, Y. E., & Yeşil, R. (2024). THE DEVELOPMENT AND INITIAL TESTS FOR THE PSYCHOMETRIC PROPERTIES OF THE EQUAL OPPORTUNITY IN EDUCATION SCALE. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 82(3), Continuous. presented at the June/2024. doi:https://doi.org/10.33225/pec/24.82.353

Ersoy, M., & Dağyar, M. (2022). A MATHEMATICAL PROBLEM-SOLVING PERCEPTION SCALE FOR SECONDARY SCHOOL STUDENTS: A VALIDITY AND RELIABILITY STUDY. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 80(5), Continuous. presented at the October/2022. doi:https://doi.org/10.33225/pec/22.80.693