Comparative education scholars are often sceptical of teaching effectiveness research that compares 'teaching quality' using systematic classroom observation systems across nations. This article investigates how three international observation systems designed for comparative use, and studies that apply them, attend to three concerns intrinsic to…

Effective teaching is a key factor in educational effectiveness and improvement. To facilitate the knowledge exchange regarding effective teaching in secondary education internationally, there has been a growing interest in using classroom observation measures. However, little is known regarding the comparability of observation measures across…