To become a substitute teacher in California, the essential steps include:

• Obtaining a bachelor's degree from a regionally accredited institution (or completing at least 90 semester units for certain permits).
• Passing the California Basic Educational Skills Test (CBEST) or meeting an equivalent basic skills requirement.
• Completing a background check by submitting fingerprints through the Live Scan service.
• Obtaining a recent tuberculosis (TB) test clearance.
• Submitting an application for a substitute teaching permit through the California Commission on Teacher Credentialing (CTC) or applying through the local education agency or school district.
• Meeting any additional requirements such as health clearances or orientation/training mandated by the employing district.

There are different types of substitute teaching permits, including the Emergency 30-Day Substitute Teaching Permit, Emergency Substitute Teaching Permit for Prospective Teachers (for those without a bachelor's degree), and Emergency Career Substitute Permit (for experienced substitutes), each with slightly different criteria. After completing the application and approval process, you receive a substitute teaching permit allowing you to work in California schools. Renewal of permits requires meeting ongoing criteria and submitting a renewal application.

If applying specifically for a district like LAUSD, the process includes applying online, completing onboarding requirements such as fingerprint clearance, TB test, physical exam, and training.

Let me know if more detailed steps or specific permit types are needed.