Most often, "open access" refers to journal articles, textbooks, or class content that anyone can access from anywhere. In other words, it isn't kept behind a paywall, anyone can download it for free.
Open access journals are often funded by fees charged to authors. This is because open access journals do not follow the traditional funding model, where subscribers (like universities) pay to access journal articles:
“The largest open access publishers, BioMed Central and PLoS, charge $1,350-2,250 per article in most cases”.1 However, UND is a supporter of BioMed Central, and so UND faculty receive a 15% discount (ask your librarian about this discount).
Open access journals vary in quality (just like traditional journals): some are reputable, some are insufficiently rigorous, and some are deceptive.2 (see checklist on previous tab).
Open access publication is beginning to become an accepted way to fulfill the requirements of promotion and tenure. The "UND OA Statement of Support" was proposed and passed by the University Senate Library Committee in May 2018, and passed by Senate Executive on 9/19/18.
Being open access doesn't mean a resource isn't copyrighted.
Example: A journal can take an article for which it retains the copyright and make it open access if they don't charge people for downloading it.
Being open access doesn't mean a resource has a creative commons license, rather than a traditional copyright license (though it is likely).
Being open access doesn't mean a resource is of poor quality (see checklist below)
Three types of Open Access publishing options: