You can’t tell who the authors or editors are or what qualifies them to write on the topic, if they are qualified at all. A survey of Wikipedia contributors found that for 45% of them, the highest degree earned was high school or less.[1]
I can really relate to this because I’ve used Wikipedia before when starting research and didn’t always think about who was writing the information. Learning that many contributors don’t have advanced education or expertise makes me realize how important it is to double-check facts and rely on more credible sources for school assignments.