The Department of Foreign Studies was a division within the Laikan Military Academy on Andoria. It provided extension courses to Starfleet officers in the first half of the 23rd century.
This department was mentioned in the diploma awarded to Philippa Georgiou after she completed her studies in Advanced Interstellar Combat. (DIS: "The Vulcan Hello")
This diploma was first seen in the Twitter account of Ted Sullivan. [1]