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 46207 and the other requirements of this chapter:

1. (a) Borrego Springs Unified School District.
2. (b) Julian Union Elementary School District.
3. (c) Julian Union High School District.
4. (d) Warner Unified School District.