(Aloha, OR)  --  Portland State University officials say they're assisting with the investigation into the disappearance of a 25-year-old student.  Washington County authorities say Emily Hooper didn't return home following a Thursday night class and didn't show up for work on Friday.  Family members told sheriff's deputies Emily may have gone to see her boyfriend following class, but the sheriff's office says the boyfriend called them Friday and said he hadn't seen her.  Anyone with information on Emily Hooper's whereabouts is asked to call 503-629-0111.