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Orange Unified School District
- Anaheim Hills Elementary School Calendar
- McPherson Magnet School Calendar
- Sycamore Elementary School Calendar
- Santiago Middle School Calendar
- Serrano Elementary School Calendar
- California Elementary School Calendar
- El Rancho Charter School Calendar
- Handy Elementary School Calendar
- Fletcher Elementary School Calendar
- Imperial Elementary School Calendar
- Villa Park High School Calendar
- El Modena High School Calendar
- Cerro Villa Middle School Calendar
- Fairhaven Elementary School Calendar
- Panorama Elementary School Calendar
- Palmyra Elementary School Calendar
- Canyon High School Calendar
- Villa Park Elementary School Calendar
- Crescent Elementary School Calendar
- West Orange Elementary School Calendar
- Chapman Hills Elementary School Calendar
- Running Springs Elementary School Calendar
- Nohl Canyon Elementary School Calendar
- Canyon Rim Elementary School Calendar
- Linda Vista Elementary School Calendar
Other districts in California state
- Orinda Union Elementary School District
- Orcutt Union Elementary School District
- Oroville Union High School District
- Ontario-Montclair School District
- Oroville City Elementary School District
- Oxnard School District
- Oxnard Union High School District
- Oakley Union Elementary School District
- Ocean View School District
- Ojai Unified School District
- Old Adobe Union School District
- Orange Center School District
- Oceanside Unified School District
- Orchard Elementary School District
- Orick Elementary School District
- Oak Park Unified School District
- Oak Grove Elementary School District
- Oak Valley Union Elementary School District