Immunization Resources
California schools are required to check immunization records for all new student admissions at TK/Kindergarten through 12th grade and all students advancing to 7th grade before entry. See https://www.cdph.ca.gov/Programs/CID/DCDC/Pages/Immunization/School/shotsforschool.aspx for more information.
TK/K-12th Grade and 7th Grade Requirements https://www.cdph.ca.gov/Programs/CID/DCDC/Pages/Immunization/School/resources-parents.aspx
If you are unable to make an appointment with your primary care provider, you can try calling a nearby CVS or Walgreens to see if they have the immunizations your child requires. You may also try LAUSD school-based health clinics which I have provided information below.