The article achieved a commendable level of mastery over a significant portion of the A-class criteria, making it worthy of one of the highest possible grades.
The article must reach at least 80% of the A-class criteria.
In addition to meeting 80% of the A-class criteria, the article must also meet the following criteria;
B1. The article contains appropriate references, including citations in the text itself.
It makes use of reputable sources, and it provides citations for any significant or contentious information that is likely to be contested. Any format of inline citation is acceptable; however, the use of citation templates such as "cite web" and "ref" tags are not required.
B2. The subject is covered adequately in the article, and there are neither glaring gaps in coverage nor inaccuracies to be found.
It contains a significant portion of the information required for an A-Class article, despite the fact that certain sections might require expansion and certain less significant topics might be missing.
B3. The format of the article is well-established.
The content should be organized into groups of related material, including a lead section as well as all of the sections that could realistically be included in an article of its kind.
B4. The article has a decent level of writing quality.
The writing is free of significant grammatical errors and flows logically, but there is no requirement that it be "brilliant." There is no requirement to strictly adhere to the guidelines provided in the Manual of Style.
B5. There are supporting materials included in the article wherever they are relevant.
The inclusion of illustrations is strongly recommended but not required. Wherever they are applicable and helpful to the content, diagrams, infoboxes, and other similar elements should be included.
B6. The content of the article is presented in a manner that is appropriate and understandable.
It is written with the goal of appealing to the greatest possible number of people. Although Wikipedia is more than just a general encyclopedia, the article should not assume that the reader has any unnecessary technical background. Furthermore, technical terms should be explained or avoided whenever possible.
Any person may mark an article as B-class, however, a grade may be contested if it is thought that an article marked as B-class does not meet at least 80% of the A-class criteria.