How will I know if a specific course will be offered in a semester?

As soon as course offerings are finalized they are posted to WebAdvisor. If you do not see a course on WebAdvisor, it hasn't been scheduled.

You can refer to the Undergraduate Calendar Psychology course listings to see whether a course is designated as "F" "W" "S" or "U" ("U" indicates that a course could be offered in any semester or not at all).