Class Size and Interaction in Online Courses
Quarterly Review of Distance Education
Furthermore, the data indicate that every respondent believed that even smaller class sizes were needed to achieve the highest interactive level possible in the RAIQ (i.e., an average of 15.6). Because interaction is a concept that has been measured in different ways in research and practice, accrediting organizations might need to clearly indicate how an institution is to measure for appropriate interaction reflected in the design of the online course in order to meet quality standards. [...] for future research, it is highly recommended to examine the relationship between class size and instructors' workload and between class size and online teaching time commitment.
Orellana, Anymir, "Class Size and Interaction in Online Courses" (2006). Faculty Articles. 279.