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Non-positive or non-significant findings related to class size studies

Not all researchers have determined positive significance related to class size. For example, Jiang and Ting (2000) analyzed 19 online courses and compared class size to variables of students’ perceptions of (a) achievement, (b) level of interaction with the instructor, and (c) level of interaction with other students, as well as the number of notes written by the instructor. No significant correlations were found between class size and any of the four variables listed. Arbaugh and Duray (2001) found that class section size was negatively associated with student learning using a sample of courses with enrollments of up to 50 students. In other studies with class sizes of 30 or fewer students, it has been determined that class size was not a significant predictor of student learning or satisfaction (Arbaugh, 2002). Drago and Peltier (2004) studied the effect of class size on the evaluation of teaching effectiveness. The class sizes among 31 online business courses ranged from 22 students to 83 students. They determined that size had little impact on overall course effectiveness; however, data were limited by a potential non-response bias in that only 53% of the students returned the survey.

Concluding remarks

Only a handful of researchers since 2000 have attempted to determine optimum class size in online courses. Of those published studies, perhaps only one or two of the studies can be considered generalizable. This is the first gap in knowledge—a lack of generalizable studies published for consumption and adoption. Numbers of students in online sections, based on anecdotal data (excluding extreme outliers) appear to mirror the numbers of class sizes reported within the available studies as noted in Figure 1.

Figure 1. Numbers of students in online classes mentioned in anecdotal and research studies with the exception of major outliers of over 2000.

More stringent research studies are needed in terms of understanding the optimum number of students for an online class. The second gap in knowledge, therefore, is the need for the development of a formula for determining optimum class size under specific and varied conditions in higher education. Probably most important to the research of online class size is the impact it is having on learning outcomes. That represents a third gap in knowledge related to online class size. Finally, since this review is appearing in a handbook related to the educational administration discipline, we must add a fourth gap. There are no researchers who have provided data, to date, on class size optimization in educational administration programs. Certainly, these gaps in the literature on online class size are-- as Li and Irby (2006) indicated-- “undiscovered territory waiting to be explored” (p. 457).


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Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
yes that's correct
I think
Nasa has use it in the 60's, copper as water purification in the moon travel.
nanocopper obvius
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
analytical skills graphene is prepared to kill any type viruses .
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
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Source:  OpenStax, Ncpea handbook of online instruction and programs in education leadership. OpenStax CNX. Mar 06, 2012 Download for free at http://cnx.org/content/col11375/1.24
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