Men's cross country places 21st at NCAA championships - The nationally ranked No. 25 Continentals were competing in the national championship meet for the first time since 1971 and the second time in program history.
Use a hyphen when forming nouns, adjectives and verbs that show occupation status: co-author, co-chair, co-worker. Omit the hyphen in other combinations: coeducation, coexist, cooperative.
SOURCE: Hamilton College Editorial Style Guide