Alexander Song was arrested last March after making an online threat of a shooting rampage, saying he hoped he could "kill enough people to make it to national news."
Police never found any guns in his possession, however, and now, Song will not spend any time in jail.
He pleaded guilty to charges of disturbing the peace at a college, and misuse of telephone facilities, and was sentenced Thursday to three years of supervised probation. Prosecutors say they support the punishment.
Song remains banned from the College Park campus.
Meanwhile, Prince George's County prosecutors say they are drafting a bill to make it a crime to make generalized threats by phone and email.