In the decade since online education emerged in higher education, digital learning has become increasingly commonplace. Various models exist-from those offered fully online to others that combine traditional classroom time with some online activities. This article identifies the dominant emergent models, provides examples of their implementation across higher-education institutions, and evaluates the cost analyses conducted to date on this relatively new teaching and learning model. The ways in which we determine the return on investment depend upon the cost indicators selected, the measures of effectiveness used, and the indices by which institutions mark progress toward their educational and cost objectives.

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