http://www.calstatela.edu/classschedule/spring13.htm

Continuing Student Registration Start Dates:

Graduate Students: February 5, 2013 - April 16, 2013
Seniors and 2nd Bachelors (201+ units): February 6, 2013 - April 16, 2013
Seniors (168 - 201.99 units): February 7, 2013 - April 16, 2013
Seniors (135 - 167.99 units): February 8, 2013 - April 16, 2013
Juniors (90 - 134.99 units): February 11, 2013 - April 16, 2013
Sophomores (45 - 89.99 units): February 12, 2013 - April 16, 2013
Freshmen (0 - 44.99 units): February 13, 2013 - April 16, 2013
Transitory (BSP or UND level): February 14, 2013 - April 16, 2013

http://www.calstatela.edu/classschedule/pdf/spring_book/21FeeAnalysisFormSpring13.pdf