The quality of an academic journal and the articles published within it is of great importance. When in doubt about the quality of an Open Access Journal, there are a number of assessment criteria:
Is the subject area of the journal clearly stated and defined?
Are researchers and (scientific) teachers the target audience and are they also mentioned as such on the website?
Are there renowned and well-known researchers from the subject area on the editorial board?
Is the journal affiliated with, or sponsored by, a scientific institute or society?
Does the content of the articles comply with the subject area of the journal and its standards?
Do the articles in the journal have a DOI (Digital Object Identifier)?
Are the licenses for each article clearly stated?
Does the journal have an ISSN (International Standard Serial Number)?