TCNJ offers a Teacher Training Program, not a Sign Language Interpreter training program. TCNJ does offer courses in American Sign Language; the demand for those classes is so great that only full-time TCNJ students may enroll.
These local community colleges have ASL Interpreter Training Programs:
Rowan College at Burlington County
Mount Laurel Campus
900 College Circle
Mount Laurel, New Jersey 08054
(856) 222-9311
American Sign Language/Interpreter Education (AAS.ASL/IE)
http://www.rcbc.edu/asl/interpreter-education-degree
Camden County College
P.O. Box 200
College Drive
Blackwood, NJ 08012-0200
(856) 227-7200
ASL, Deaf Studies, English Interpreting and Pre-Interpreting
http://www.camdencc.edu/academics/departments/language-and-culture/asl-interpreting.cfm#sla.aas
Professor Sally Ann Emilius
semilius@camdencc.edu
ASL classes & ASL assessment
Professor Dianne Falvo
(856) 227-7200, ext. 4540
dfalvo@camdencc.edu
Interpreting & EIPA information
Community College of Philadelphia
1700 Spring Garden Street
Philadelphia, PA 19130
(215)-751-8000
American Sign Language/English Interpreting (INT)
http://www.ccp.edu/college-catalog/degree-and-certificate-programs/associate-applied-science-aas/american-sign
Union County College
232 East Second Street
Plainfield, NJ 07060
(908)-791-4935
American Sign Language-English Interpreting
http://admissions.ucc.edu/about/Spotlight/AcademicExcellence/aslengint.aspx
Educational Interpreter Professional Development Center
http://www.ucc.edu/Community/EIPDC