CA Educ Code Section 37681

(a)

Commencing with the 2004–05 school year, a school district may not operate a Concept 6 program, unless the school district operated a Concept 6 program continuously since the 2003–04 school year.

(b)

A school initially operating on or after July 1, 2004, may not operate a Concept 6 program if operation of the program would increase the number of schools in the district operating a Concept 6 program above the number in operation in the district, on average, over the preceding two school years.