A new study examines how different aspects of teaching quality relate to students’ mathematics achievement in Czech lower secondary schools. The research builds on the Three Basic Dimensions of Teaching Quality framework, which distinguishes three core components of effective instruction: cognitive activation, classroom management, and student support.

Using data from 2,609 seventh-grade students across 142 classrooms, the study tested the structure of this model. The results suggest that the traditional three-dimensional framework is better represented by a four-factor model, which separates cognitive activation into two forms: activation through learning tasks and activation through teacher–student interaction.

The findings further show that teaching quality does not benefit all students equally. Cognitive activation through teacher interaction was associated with higher mathematics achievement primarily among high-achieving students, while classroom management was linked to improved outcomes for students with moderate prior achievement. For lower-achieving students, however, none of the observed dimensions of teaching quality showed a significant effect.

These results highlight that instructional practices typically considered effective may not support all learners equally and may, in some cases, contribute to widening existing achievement gaps.

Read the full article here: https://www.frontiersin.org/journals/education/articles/10.3389/feduc.2025.1712000/full