Vanguard University defines enrollment status below for current students based on a 16-week term: 

Full-time:
Traditional Undergraduate¹:  12 units
Professional Education or Non-Traditional Education²:  9 units
Graduate³:  6-9 units

Three-Quarter-time:
Undergraduate¹:  9 units
Graduate:  7 units

Half-time:  
Undergraduate¹:  6 units
Graduate:  5 units

¹

Includes all students taking undergraduate level courses regardless of the delivery system (e.g. online, seated) or student type (traditional or professional education).  Also includes students pursuing their teaching credential, though coursework will count toward the MA degree.

²

Professional education programs are typically offered in 5 and 8 week sub-terms within the overall 16-week term. Nine credits taken in the sub-term cohort format is considered full-time. 

³

Please contact the respective Graduate Program Chair for more information on number of units required for full-time status in a particular program.