2007 California Education Code Article 6. Opportunity Schools

CA Codes (edc:46180)

46180.  The minimum day in an opportunity school or opportunity
class is 180 minutes.  A pupil may be enrolled in an opportunity
program for not less than a class period of the school, nor more than
179 minutes per day.  Attendance for a pupil enrolled in an
opportunity program shall be credited to the regular class
attendance.
   A pupil who is enrolled in both an opportunity program and a
regular school, shall attend school for a period of time not less
than the minimum schoolday required for the grade level in which he
is enrolled.