Beginning in the 2004–05 fiscal year, the following school districts in San Diego County may operate one or more schools in their respective districts on a four-day school week if the districts comply with the instructional time requirements specified in Section 37701 and the other requirements of this chapter:
(a) Borrego Springs Unified School District.
(b) Julian Union Elementary School District.
(c) Julian Union High School District.
(d) Warner Unified School District.