Wikipedia articles improved to C-class, and then B-class status may be submitted to the peer review process to receive ideas and feedback from other editors.
Upon successful completion of the peer review, an article can be nominated for GA-Class (Good Article) status.
A good article is...
1. Well written: Prose and layout are clear, and comply with certain aspects of the Manual of Style (MOS); in particular, the lead is a concise summary of the article.
2. Accurate and verifiable: Reliable sources are provided, and cited where necessary.
3. Broad: It covers the main aspects of the topic without going into unnecessary detail. It is encyclopedic.
4. Neutral: It represents viewpoints fairly and without bias.