Section 37711 Of Chapter 6. Four-day School Week From California Education Code >> Division 3. >> Title 2. >> Part 22. >> Chapter 6.

. 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.