School closures resulting from the COVID-19 pandemic have brought the issue of learning loss to the forefront in what has been called the "COVID slide." Data from the pandemic show a decline in student achievement in the areas of reading and mathematics for school districts that shifted to virtual learning platforms. However, it is…

This study employed a randomized experiment to examine differences in teacher and student learning from professional development (PD) in two modalities: online and face-to-face. The study explores whether there are differences in teacher knowledge and beliefs, teacher classroom practice, and student learning outcomes related to PD modality.…