O

off-campus (adj.), off campus (adv.)

Hyphenate when used as an adjective: The university is looking at off-campus housing as an option.
Write two words, without hyphenation when used as an adverb: The student moved off campus.
Guidelines are the same for on-campus and on campus.

office

Capitalize when part of a proper name: She submitted her story to the Office of Communications
Use lowercase in all other uses : He visited the dean’s office.

Online Degree programs

A-State Online, known for being convenient, affordable, and valuable, allows a student to achieve educational goals on the individual's schedule. One of the oldest online degree programs in Arkansas, the degrees earned through A-State Online are identical to those earned by the more than 80,000 alumni of Arkansas State University.  ATake a look at the complete list of online degrees offered at the undergraduate and graduate levels is available at: lehttp://www.AState.edu/info/academics/degrees/index.dot?s=online-onlyvels.

osteopathic medical school (see NYIT entry)

osteopathic medicine, doctor of

Use D.O. to abbreviate doctor of osteopathy.  See the NYIT entry. The NYIT editorial style manual also is available here.