Wordnet 3.0
NOUN (1)
1. 
 a course of study that is supervised and controlled by a specialist in the subject; 
- Example: "he registered for directed study"- Example: "he got credit for directed study"- Example: "he did directed study"
WordNet (r) 3.0 (2006):
directed study
    n 1: a course of study that is supervised and controlled by a
         specialist in the subject; "he registered for directed
         study"; "he got credit for directed study"; "he did
         directed study"