The answer to this question depends on the specific school district. However, based on the search results, here are some possible dates for the first day of school:

• Los Angeles Unified School District: Monday, August 14, 2023
• Beverly Hills Unified School District: Monday, August 28, 2023
• Arcadia Unified School District: Wednesday, August 16, 2023 (high school only) or Thursday, August 17, 2023 (elementary and middle schools)
• Baldwin Park Unified School District: Thursday, August 17, 2023

Its important to note that these dates are subject to change and may vary depending on the specific school or grade level. Its best to check with your local school district for the most accurate and up-to-date information.