34 C.F.R. § 682.101
The following entities and persons participate in the FFEL programs:
(c) Students who met certain requirements, including enrollment at a participating school, borrowed under the Stafford Loan Program prior to July 1, 2010 and, for periods of enrollment that began prior to July 1, 1994, the SLS program. Parents of eligible dependent undergraduate students borrowed under the PLUS Program prior to July 1, 2010. Borrowers with outstanding Stafford, SLS, FISL, Perkins, HPSL, HEAL, ALAS, PLUS, or Nursing Student Loan Program loans borrowed under the Consolidation Loan Program prior to July 1, 2010. The PLUS Program also provided for making loans to graduate and professional students on or after July 1, 2006 and prior to July 1, 2010.
(Authority: 20 U.S.C. 1071 to 1087-2)
[57 FR 60323, Dec. 18, 1992, as amended at 59 FR 61215, Nov. 29, 1994; 64 FR 18975, Apr. 16, 1999; 66 FR 34762, June 29, 2001; 71 FR 45698, Aug. 9, 2006; 71 FR 64397, Nov. 1, 2006; 78 FR 65806, Nov. 1, 2013]