%0 Thesis
%9 Doctoral
%A Tangpornpaiboon, Sirin
%B Education, Practice and Society, UCL Institute of Education
%D 2022
%F discovery:10160220
%I UCL (University College London)
%P 479
%T Understanding Discrepancies in Trend Results of PISA, TIMSS, and O-NET and Implications for Education Policies in Thailand
%U https://discovery.ucl.ac.uk/id/eprint/10160220/
%X This research aims to understand determinants of learning outcomes and disentangle sources of discrepancies found in (national and international) assessment result trends in Thailand. It situates in a broader research problem of how learning outcomes can be improved in Thailand. When the trends differ significantly, as in Thailand, there is less confidence in deducing how education quality changed. Hence, the research question is “What could explain the discrepancies in trends of O-NET, PISA, and TIMSS, and what implications do they have on policies?”. The time frame of 2011-2015 is selected as the trends differ markedly (PISA shows a significant decrease, O-NET significant increase, and TIMSS no change). The research employs a sequential explanatory mixed methods design, with the quantitative part being conducted first (macro perspectives), followed by qualitative (practitioner or micro perspectives).   The quantitative part employs analysis of descriptive statistics, OLS regressions, and multilevel modelling to investigate the potential sources of discrepancies among PISA, TIMSS, and O-NET , using child-level data. Results show general agreement among the assessments on the high- and low- performers, with the largest gaps among school affiliations. At the item level, Thai students perform worse on higher-skilled items over time, which could explain the decline in PISA.   The qualitative part focuses on the perspectives of principals and teachers. Semi-structured interviews were conducted with 27 practitioners of all school affiliations. Data were analysed using thematic and contribution analysis. Results show many systematic factors contributing to the score gap including student background and aspiration, ability to teach beyond the curriculum, and differential performance pressure. Additionally, increase focus on O-NET help explains trend discrepancies.