California Code, Education Code - EDC § 46191

(a) In classes for adults maintained for adults in any county jail, or any correctional facility, including any county industrial farm or county or joint county road camp, a day of attendance is 180 minutes of attendance; but no pupil in such a class shall be credited with more than one day of attendance in any calendar day, nor with more than 15 clock hours of attendance during any one school week.

(b) Notwithstanding subdivision (a), a pupil in that class may be credited with more than one day of attendance in any calendar day, and more than 15 clock hours of attendance during any one school week, so long as the total number of units of average daily attendance calculated on that basis for the school district or county superintendent of schools do not exceed the number of units of average daily attendance actually reimbursed for the 1992-93 fiscal year for the school district or county superintendent of schools, as adjusted for any statutorily authorized rates of growth of units of average daily attendance. However, pursuant to subdivision (e) of Section 46300, no pupil in independent study, in a setting described in subdivision (a), shall be credited with more than one day of attendance in a calendar day.

(c) One adult in a correctional facility may not generate more than one day of attendance if it results in another adult in the same correctional facility being denied classes.