This special issue features seven systematic reviews and two scoping reviews.To foster a better understanding of the state of online learning research, we have structured the issue by focus area: (1) systems level; (2) pedagogical level; and (3) people level (see Figure 1). The first and third sections each contain two articles, while the middle section contains five. At the systems level, the issue includes reviews focusing on research trends during COVID-19 and examining the features of high-quality online learning. At the pedagogical level, reviews on engagement and assessment are featured, including collaboration, help-seeking, invisible participation,intersubjectivity,and online learner assessment.The people level contains a review of the research on the role of moderators in an asynchronous online discussion and a review of the research on online learning for minoritized and first-generation students.
