Usually publishing organizations have house rules and the copy hews to these rules. NPR uses the spellings in Webster’s New World College Dictionary Fifth Edit

Usually publishing organizations have house rules and the copy hews to these rules. NPR uses the spellings in Webster’s New World College Dictionary Fifth Edition, and then has a few rules of their own. A more algorithmic rule is found in APA style: https://blog.apastyle.org/apastyle/2016/10/hyphenation-station-the-hyphenation-of-prefixes-in-apa-style.html https://blog.apastyle.org/apastyle/2016/10/hyphenation-stati... Edit: NPR also uses the Associated Press Stylebook and related resources.